Causes And Effects Of Strokes Biology Essay

Causes And Effects Of Strokes Biology Essay Stroke is defined as A neurological deficit of cerebrovascular cause that persists beyond 24 hours or is interrupted by death within 24 hours. WHO (1970) A stroke is the rapidly developing loss of brain functions due to a disturbance in the blood vessels supplying blood to the brain. This can be due to ischemia caused by thrombosis or embolism or due to a hemorrhage. As a result, the affected area of the brain is unable to function, leading to inability to move one or more limbs on one side of the body, inability to understand or formulate speech or inability to see one side of the visual field (Donnan GA, Fisher M. May 2008). PREVALANCE AND INCIDENCE: Stroke could soon be the most common cause of death worldwide (Murray CJ, Lopez AD 1997). Stroke is currently the second leading cause of death in the Western world, ranking after heart disease and before cancer (Donnan GA, Fisher M, May 2008)and it causes 10% of deaths worldwide (World Health Organization. 2004) . It has been noted that stroke incidence may vary considerably from country to country. The prevalence of stroke in India was estimated as 203 per 100,000 populations above 20 years, amounting to a total of about 1 million cases. Stroke represented 1.2% of total deaths in India (PK Sethi Neurosciences Today 2002). SEX DIFFERENCES: Men are 1.25 times more likely to suffer strokes than women(PK Sethi Neurosciences Today 2002), yet 60% of deaths from stroke occur in women (Villarosa, Linda, Ed.1993). CLASSIFICATION: Strokes can be classified into two major categories: ischemic and hemorrhagic. Ischemia is due to interruption of the blood supply, while hemorrhage is due to rupture of a blood vessel or an abnormal vascular structure. 80% of strokes are due to ischemia; the remainders are due to hemorrhage (Donnan GA, Fisher M. May 2008). ISCHEMIC STROKE: In an ischemic stroke, blood supply to a part of the brain is decreased, leading to dysfunction of the brain tissue in that area. The four reasons responsible for ischemic stroke are thrombosis, embolism (Donnan GA, Fisher M. May 2008), systemic hypoperfusion (Shuaib A, Hachinski VC .September 1991) and venous thrombosis (Stam J. 2005). HAEMORRAGIC STROKE: Intracranial hemorrhage is the accumulation of blood anywhere within the skull vault. Intracerebral hemorrhage (ICH) is bleeding directly into the brain tissue, forming a gradually enlarging haematoma. RISK FACTORS: High blood pressure, High blood cholesterol levels, Diabetes, Cigarette smoking (Hankey GJ. August 1999), Heavy alcohol consumption (Reynolds K, Lewis B, Nolen JD, et al .2003) , drug use, (Sloan MA, 1991), lack of physical activity, obesity, unhealthy diet (American Heart Association.2007) and Atrial fibrillation. CAUSES: When the flow of blood in an artery supplying the brain is interrupted for more than a few seconds, brain cells can die, causing permanent damage. An interruption can be caused by either blood clots or bleeding in the brain. Most strokes are due to blood clots that blocks the blood flow to brain. Bleeding into the brain occurs if a blood vessel ruptures or if there is a significant injury (Ay H; Furie KL. 2005). BLOOD CLOTS: A common cause of stroke is atherosclerosis. Fatty deposits and blood platelets collect on the walls of the arteries, forming plaques. Over time, the plaques slowly begin to block the flow of blood. The plaque itself may block the artery enough to cause a stroke (Ay H; Furie KL. 2005). The plaque causes the blood to flow abnormally, which leads to a blood clot. A clot can stay at the site of narrowing and prevent blood flow to all of the smaller arteries it supplies. In other cases, the clot can travel and wedge into a smaller vessel (Ay H; Furie KL. 2005). Strokes caused by embolism are most commonly caused by heart disorders. An embolism may originate in a major blood vessel as it branches off the heart. A clot can also form elsewhere in the body for any number of reasons, and then travel to the brain, causing a stroke (Ay H; Furie KL. 2005). Arrhythmias of the heart, such as atrial fibrillation, can be associated with this type of stroke and may contribute to clot formation. Other causes of embolic stroke include endocarditis, or use of a mechanical heart valve. A clot can form on the artificial valve, break off, and travel to the brain (Ay H; Furie KL. 2005). BLEEDING IN THE BRAIN: A second major cause of stroke is bleeding in the brain. This can occur when small blood vessels in the brain become weak and burst. Some people have defects in the blood vessels of the brain that make this more likely. The flow of blood after the blood vessel ruptures damages brain cells (Ay H; Furie KL. 2005). PATHOPHYSIOLOGY: ISCHAEMIC: Ischemic stroke occurs due to a loss of blood supply to part of the brain, initiating the ischemic cascade. Brain tissue ceases to function if deprived of oxygen for more than 60 to 90 seconds and after a few hours will suffer irreversible injury possibly leading to death of the tissue. Atherosclerosis may disrupt the blood supply by narrowing the lumen of blood vessels leading to a reduction of blood flow, by causing the formation of blood clots within the vessel (National Institute of Neurological Disorders and Stroke.1999). Embolic infarction occurs when emboli formed elsewhere in the circulatory system, typically in the heart as a consequence of atrial fibrillation, or in the carotid arteries. These break off, enter the cerebral circulation, then lodge in and occlude brain blood vessels (National Institute of Neurological Disorders and Stroke.1999). HAEMORRAGIC: Hemorrhagic strokes results in tissue injurys by causing compression of tissues from an expanding hematomas. This can distort and injure the tissues. In addition, the pressure may lead to a loss of blood supply to affected tissue with resulting infarction, and the blood released by brain hemorrhage appears to have direct toxic effects on brain tissue and vasculature (National Institute of Neurological Disorders and Stroke.1999). SIGNS AND SYMPTOMS: A stroke symptom typically starts suddenly, over seconds to minutes, and in most cases dont progress further. The symptoms depend on the area of the brain affected. The more extensive the area of brain affected, more the functions that are likely to be lost (National Institute of Neurological Disorders and Stroke.1999). A sudden development of one or more of the following indicates a stroke: Paresis or paralysis of any part of the body, Numbness, tingling, or decreased sensation, Changed or diminished vision, Language difficulties, including slurred speech, inability to speak, inability to understand speech, difficulty in reading or writing, Swallowing difficulties or drooling, Loss of memory, Vertigo, Loss of balance or coordination, Personality changes, Mood/emotion changes, Drowsiness, lethargy, or loss of consciousness, Uncontrollable eye movements or eyelid drooping. SUB TYPES: If the area of the brain affected contains one of the three prominent Central nervous system pathways-the spinothalamic tract, corticospinal tract, and dorsal column, symptoms may include hemiplegia and muscle weakness of the face, numbness, reduction in sensory or vibratory sensation. In most cases, the symptoms affect only one side of the body. The defect in the brain is usually on the opposite side of the body depending on which part of the brain is affected. In addition to the above CNS pathways, the brainstem also consists of the 12 cranial nerves. Hence a stroke affecting the brain stem can produce symptoms relating to deficits in the cranial nerves. The symptoms are altered smell, taste, hearing, or vision, drooping of eyelid and weakness of ocular muscles, decreased reflexes like gag, swallow and pupil reactivity to light, decreased sensation and muscle weakness of the face, balance problems and nystagmus,altered breathing and heart rate,weakness in sternocleidomastoid muscle with inability to turn head to one side,weakness in tongue. If the cerebral cortex is involved, the CNS pathways can again be affected, but also can produce the symptoms like aphasia, apraxia, visual field defect, memory deficits, hemineglect, disorganized thinking, confusion, hypersexual gestures ,anosognosia (Bamford JM 2000). When the cerebellum is involved, the patient may have the symptoms like Trouble walking, altered movement, coordination, Vertigo and disequilibrium (Bamford JM 2000). ASSOCIATED SYMPTOMS: Loss of consciousness, headache, and vomiting usually occurs more often in hemorrhagic stroke than in thrombosis because of the increased intracranial pressure from the leaking blood compressing on the brain. DIAGNOSIS: The techniques which were used to diagnose the stroke are neurological examination, CT scans or MRI scans, Doppler ultrasound, and arteriography. The diagnosis of stroke itself is clinical, with assistance from the imaging techniques. Imaging techniques also assist in determining the subtypes and cause of stroke. There is yet no commonly used blood test for the stroke diagnosis itself, though blood tests may be of help in finding out the likely cause of stroke (Hill M 2005). PREVENTION: Screening for high blood pressure at least every two years, regular cholesterol check up, treat high blood pressure, diabetes, high cholesterol and heart disease, follow a low-fat diet, quit smoking, exercise regularly, lose weight if you are over weight, avoid excessive alcohol use (Goldstein LB, Adams R, Alberts MJ et al. 2006). TREATMENT: Treatment of ischemic stroke: Pharmacologic thrombolysis with the drug tissue plasminogen activator (tPA), Mechanical thrombectomy and anticoagulants. Treatment of hemorrhagic stroke: Patients with intracerebral hemorrhage require neurosurgical evaluation to detect and treat the cause of the bleeding, although many may not need surgery. Patients are monitored and their blood pressure, blood sugar, and oxygenation are kept at optimum levels. PHYSIOTHERAPY TREATMENT: The rehabilitation techniques commonly used were Roods Sensorimotor Approach, Knotts and Voss Proprioceptive Neuromuscular Facilitation, Brunnstroms Movement Therapy, Bobaths Neuro Developmental Therapy, Motor Relearning Programme, Bimanual Rapid Alternating Movement, Motor Imagery Therapy, Robot Assisted Movement Therapy, Functional Electrical Stimulation, Bilateral Isokinetic Training, Cyclic Electrical Neuromuscular Stimulation, Biofeedback etc. PROGNOSIS: The results of stroke vary widely depending on size and location of the lesion (Stanford Hospital Clinics.2005). Dysfunctions correspond to areas in the brain that have been damaged. Disability affects 75% of stroke survivors enough to decrease their employability (Coffey C. Edward.2000). Stroke can affect patients physically, mentally, emotionally, or a combination of the three. 30 to 50% of stroke survivors suffer post stroke depression, which is characterized by lethargy, irritability, sleep disturbances, lowered self esteem, and withdrawal. Depression can reduce motivation and worsen outcome (Senelick Richard C.1994).

The effect of exercise on blood pressure

The effect of exercise on blood pressure Introduction: The Cardiopulmonary System is the system in the body that is responsible for collecting and distributing oxygen to all parts of the body for use in cellular respiration and is also for removing the waste carbon dioxide that the body produces after burning the oxygen. This system is comprised of the respiratory and circulatory systems which include the heart, lungs, veins, arteries, and capillaries. The respiratory system is what collects the oxygen from the outside environment and expels CO2 through breathing. When someone breaths they inhale oxygen into their lungs and exhale CO2 out of their lungs. The circulatory system is the organ system that transports the bodys blood throughout itself. The blood carries important materials like oxygen and carbon dioxide to every inch of the body. The heart is a muscle about the size of a clenched fist and weighs approximately 10.5 ounces (Science Clarified 2010). It is the control center of the circulatory system and moves the blood to the lun gs and the other parts of the body through contracting and relaxing itself in a rhythm that keeps blood constantly traveling in the body. The way the cardiopulmonary system works is the heart is always pumping blood through its 4 chambers (right and left atrium and ventricles) and out through arteries out to the body. The right atrium and right ventricle pumps CO2 rich and O2 poor blood to the lungs, where thinner blood vessels called capillaries absorb oxygen from the lungs and releases its CO2 into the lungs. The oxygen rich blood returns to the heart through veins into the left atrium and then the left ventricle. The oxygen rich blood is then pumped out into more arteries that take the blood to other organs and parts of the body. The oxygen is released into the cells through thin capillaries again, and then return as oxygen poor and carbon dioxide rich blood returns to the heart. The functions of the cardiopulmonary system can be measured by taking a humans heart rate and blood pressure. The heart rate or pulse is how many times a humans heart beats per minute. The heartbeat can be measured only through arteries, because when the heart contracts, the forced blood causes pressure that can be felt in the arteries, known as arterial pressure. Veins traveling back to the heart have much thinner walls and therefore dont have enough pressure from the heart pumping to be used to measure pulse. The pressure within veins is affected by conditions outside the vessels themselves, such as contraction of surrounding skeletal muscles (Weedman and Sokoloski 2009). Blood pressure is taken by measuring a persons diastolic pressure and systolic pressure. The diastole is the period of the hearts pumping cycle when the atria and ventricles fill and the heart relaxes. The systole is when the heart contracts and forces the blood out of the heart. The total elapsed time for a compl ete cycle of both the atria and the ventricles is 0.8 second (Fredrick and Pauline 1987). In this lab, the question for the experiment was how exercises will affect your blood pressure and pulse. The hypothesis tested was walking up or down four flights of stairs will increase blood pressure and pulse, unlike the null hypothesis that blood pressure and pulse after walking up or down the stairs will not be affected. We hypothesized that blood pressure and pulse will increase because walking up or down stairs requires more energy than a body at rest. This exercise requires the heart pump blood faster in order to supply more oxygen to the body to provide the energy to walk up and down the stairs. The importance and relevance of this experiment is that someone who is unhealthy and prone to a heart attack may be at risk of suffering an attack while walking up flights of stairs if it raises blood pressure and heart rate. Methods and Materials: The experiment was done in a building with four flights of stairs, with 24 participants from our class separated into groups of two. The two partners had a sphygmomanometer that measured blood pressure and pulse, and a pencil and paper to record pulse and blood pressure. The heart rate and blood pressure was tested for walking up and down the stairs by making partner one walk up four flights as partner two waited at the top of the stairs. When partner one reached the top, partner two was there too measure partner ones heart rate and blood pressure using the sphygmomanometer. The inflatable cuff on the device was attached to the partners upper arm and inflated. The cuff was then deflated as the sphygmomanometer analyzed the blood pressure and pulse from the partners artery running down their arm. Partner two measured the blood pressure and pulse once after partner one reached the top of the stairs, then again after two minutes passed, and after four minutes passed. The same process wa s taken for the other partner walking down the stairs. The independent variable was the subject either walking up or down the stairs. The dependent variable was each partners heart rate and blood pressure. After the experiment, we gathered the data from everyone in the class and averaged their results and compiled the data into tables and graphs for interpretation. Results: The results from the participants of the experiment were that on average, after each partner did their exercise, their blood pressure and heart rate increased. Comparing walking up the flights of stairs to walking down however, our results showed that walking up stairs increased blood pressure and pulse more than walking down the stairs. Our classs averages are compiled in the data table below. The data from the table is also displayed on graphs to show the trend of blood pressure and pulse. T-tests were done on the data from the basal reading to 0 minutes after walking up or down the stairs and from 0 minutes after to 4 minutes after walking up or down the stairs. The t-tests show the probability that the results from walking up or down starts are based on chance, or if there is significance to the results. If the P value of each t-test is greater than .05 then the results are based on chance and are insignificant. Data Table: Pulse (bpm) Down Up Basal 71.5 67.7 0 min post 72.6 88.6 2 min post 73.6 67.2 4 min post 73.9 70.3 Systolic BP (mm Hg) Basal 113.3 119.3 0 min post 121 141 2 min post 119 122 4 min post 112 123 Diastolic Bp (mm Hg) Basal 71.3 71 0 min post 76 91 2 min post 77 81 4 min post 78 78 T-Tests: T-Test T-Test Down T-Test Up Pulse Rate Basal- 0 Min. 0.646774259 0.021762917 0 Min. 4 Min. 0.628728428 0.032305937 Systolic Blood Pressure Basal- 0 Min. 0.04246026 0.002469184 0 Min. 4 Min. 0.017651827 0.000671518 Diastolic Blood Pressure Basal- 0 Min. 0.074034579 0.000739125 0 Min. 4 Min. 0.567643162 0.001016322 Graphs: According to the averages in blood pressure and pulse, the graph and data tables show that walking up stairs increases the blood pressure and pulse more than walking down the stairs. The T-test for each measurement says that in the majority of the data Discussion: Before the experiment, I hypothesized that when someone walks up or down the stairs, it would increase the persons blood pressure and pulse. The experiment results instead only supported the hypothesis that walking up the stairs increases blood pressure and pulse, but the data and t-tests showed for walking down stairs showed that it wasnt a significant increase. My hypothesis wasnt fully correct and a more appropriate hypothesis would have been that walking up the four flights of stairs would increase blood pressure and pulse more than walking down the same amount of stairs. This is because while walking upstairs the body has to work against the force of gravity which is more energy consuming than walking down stairs. This explains our results that after walking up the stairs, the subject tested had a higher blood pressure (141/91) and pulse (89) than the subject who walked down the stairs (BP 121/76 Pulse 72). The heart had to pump faster and with more force going up the stairs to move oxygen faster to the parts of the body and thus raised the bodys blood pressure and pulse. Some errors that manipulated the results were the two being tested had different features like height, weight, shape, and health. These differences would lead to different results because someone that is in better physical condition would not have as high a blood pressure and pulse than someone who isnt as fit. This is because their heart is stronger and doesnt need to work as hard to supply the body with the right amount of oxygen. The entire class also had a range of body types all in different physical shape that also could have affected results. Also the partner who walked down the stairs did not get measured on time for the 2 minute and 4 minute measurements and the sphygmomanometer didnt always properly read the subjects blood pressure and pulse properly. If this experiment was to be repeated it would be better if only one person walked up and down the stairs, and that there was a control measurement of the persons pulse and blood pressure before they walk up the stairs and are at rest. Cited Literature: Cornett D. Frederick, Gratz Pauline. 1987. Modern Human Physiology. United States: Holt, Rinehart and Winston, Publishers. p 337. Science Clarified, Circulatory System, http://www.scienceclarified.com/Ci-Co/Circulatory-System.html, Sept. 7, 2010. Weedman, Sokoloski. 2009, Biology of Organisms A Laboratory Manual for LIFE 103. Mason OH: Cengage Learning. p 176.

From Lullus to Cognitive Semantics: The Evolution of a Theory of Semantic Fields :: Philosophy Philosophical Essays

From Lullus to Cognitive Semantics: The Evolution of a Theory of Semantic Fields ABSTRACT: The domain of cognitive semantics-insofar as it deals with semantic neighborhood and semantic fields-is discussed from a historical perspective. I choose four distinct stages in the evolution in philosophy of language: Raymundus Lullus and his Ars Magna (14th century); Giodano Bruno and his artificial memory system (16th century); Charles Sanders Peirce and his diagrammatic logic (19th century); and, Kurt Lewin and his topological psychology (20th century). Their proposals furnish steps toward a kind of space-oriented model of semantic neighborhood and semantic fields. Linguistic developments since 1920 (field linguistics) and more recently in cognitive semantics are compared to the evolution in the frame of philosophy as put forth above. The result is that we criticize cognitive semantics insofar as the field does not reflect the philosophical work done since Raymundus Lullus, which is highly relevant for contemporary cognitive science. Introduction Although field-semantics was only created at the beginning of the 20th century, some of its major features have precursors dating back to antiquity. Two disciplines have contributed to it: logic on the one hand and models of the world / cosmology on the other hand. My specific concern will be the rise of a space-orientated concept of a semantic field because, as the word "field" indicates, the ideas of dimensionality (one two- or multi-dimensionality) lies at the heart of the image-schema "field" in its theoretical use. 1 The circular fields of Llull The first systematic spatial organization of lexical items (their concepts) was put forward by Raymundus Lullus (Ramà ³n Llull: 1232-1314). All conceptual systems of his Ars Magna are arranged in a linear order with (normally) nine segments. Since the extremes of this 'belt' are joined, we have a circular field. Every concept has two neighbours, and by adding specific figures (triangles, squares, etc.) one can join three, four, etc. concepts to create a sub-network. The concepts of an area of knowledge may be organized into a set of such nine-tuple 'fields'. On top of all the more specific conceptual fields (arrays of nine concepts), stands a universal field, which contains those qualities of God that are at the origin of all further entities and their concepts. The semantic system has an ontological and metaphysical foundation in the tradition of Aristotelian and medieval logic. The idea that concepts/words form linear arrays, that the extremes may be glued together, and that a hierarchy of such arrays exists, is a first realization of 'field-semantics'.

Arapesh and Embedded vs. Disembedded economy :: Essays Papers

Arapesh and Embedded vs. Disembedded economy Polanyi says, regarding the economy, â€Å"the economic process†¦.is embedded in noneconomic institutions.† An embedded economy is an economy in which economic activities occur such as, production and distribution; however other activities, which are not economic also occur. Activities such as forming friendships or helping other people may be happening, but it might just seem like the normal economic process because it is an embedded economy. When Polanyi says that the economy is â€Å"embedded in noneconomic institutions† he means that while economic activity is occurring, it is occurring for noneconomic reasons. The economic activity may be occurring in order to continue a friendship or help someone. Activities in an embedded economy often seem like they are not economic activities. They seem like this because usually the reason the economic activity is occurring is for noneconomic reasons. For example, if two bakers both produce wheat bread, but do not eat their own, instead they exchange bread, because they want to have a reason to be friends. This situation does not seem like economic activity, it seems like two people sharing their food. It actually is economic activity, because the two bakers are both producing and distributing their bread. So, even though the bakers are only exchanging the bread because they want to maintain their friendship, what they are doing is an economic activity that would happen in an embedded economy. Today most economic activity is considered to be part of a disembedded economy. In a disembedded economy, economic activity occurs only for economic reasons, so it is the opposite of an embedded economy. Economic activity is completely independent from such institutions as family or friendship. An example, of activity in a disembedded economy is a person going to a grocery store and buying bread. There is no other institution involved in the economic process of production and distribution of the bread which is why this would occur in a disembedded economy. The producer of the bread is making the bread so that he can sell it and get money for it, the consumer is buying the bread so it will belong to him. Economic activities of production and distribution are perceived by the Arapesh to just be part of their society. Everything that the Arapesh use and take care of daily belongs to someone else, whether it is their trees or pigs. The Arapesh believe that they must share what they own with the other Arapesh to help them survive.

The Act of Blogging:Creating an Online Home :: Blogs

The Act of Blogging:Creating an Online Home A phenomenon has taken place on the internet. This phenomenon is called blogging. Blogging is nothing more the journal of people published on the internet. The interesting thing is, other people around the world can share in this journal with you. Another interesting note that might be commonly over looked, is the resemblance of a blog site and a real home, metaphorically speaking. Whether or not a blogger is intentionally giving his site a homely look to it, the resemblance is there nonetheless. Items you might come across on a blog site are pictures, a portfolio of the blogger, and links to other blog sites. For the bloggers that take this seriously, it is important to have this information to create an environment that you are comfortable with and you are comfortable with others to view. You want for the viewers to feel welcome to your site and enjoy what they see and read. For the viewers, they are looking for a connection with other people with similar likes and dislikes. An individual named Andy does a lot of traveling, and has created a blog site to tell about his travels. Because of his extensive travels, Andy has chosen to make an online home. In several e-mail conversations I had with Andy, he told me that his web site is a place where he can go for some familiarity. He was intrigued at the comparison that I had made between the two types of homes. When you enter this site you are greeted with a different picture about once a week. Pictures are important; they add life to the web site. Pictures are also important because they give character to the web site, and in some cases can even tell a story. Pictures on a web site are a lot like pictures on the wall of a house, for the same reasons. Pictures or paintings I feel are a necessity for a house or web site. Throughout a house you will find books, magazines, newspapers, and all sorts of other little nick nacks. These items are there for enjoyment and education. They also describe what kind of person it is that lives there and what his likes and dislikes are. In the blog world, you might find a personal profile of the blogger. For the serious bloggers, it is almost a guarantee that you will find one.

Comparing poems Essay

In this essay I am going to compare the way the theme of racism is dealt with in the poems ‘Half caste’ and ‘nothings changed’. I will analyse the poems and then compare them. The things I will be comparing are the similarities and differences, the layout and also the use of language. I will be looking at both of the authors Tatamkhula Africa (Nothings Changed) and John Agard (Half caste) intentions and then decide which one of the poems I think is most effective. I am going to begin with a comparison of the purposes of the two poems. Nothings changed is about a black man looking back at his childhood and realising that ‘nothings changed’, he is upset about this as although segregation is said to have gone, he feels as if it is the same as before. Half-caste is about a mixed race man who is asking for an explanation for why they are treated like half a person. He refuses to be called half-caste as he finds it offensive. In both of these poems, the writer is dealing with the issues of racism. The two writers are expressing their anger and want the readers to take notice of how they feel. The two writers both use repetition throughout the poem. Tatamkhula used the phrase ‘nothings changed’ as both the title and the ending of the poem, this emphasises the fact that his whole poem is based on the fact that he feels that nothing has changed in his life, mainly on the aspect of the way black people are treated. John repeats ‘explain yuslef’ a number of times throughout the poem, he says this because his main aim of the poem is for people to explain themselves. These both are examples of repetition used by the writers to emphasise on their point that they want to get out by writing their poem. The two writers have a completely different style of writing. In nothings changed the writer uses standard use of English as he is happy to write this way. On the other hand the writer of half caste writes the words in slang. Clearly he wants to show the reader that he is what he is and is not going to change for anyone.  Tatamkhula compares a black person like himself to an ‘amiable weed’, he is doing this as he feels that both black people and amiable weeds are not cared for. Also he believes they are not wanted. He then later compares a white person to the opposite, a ‘red rose’, this maybe because he thinks that a lot of care is taken into caring for a red rose and also the white people. Here Tatamkhula expresses himself through metaphors and he does so continuously throughout the poem. John’s use of language happens to be really strong. He shows straight away that he is extremely angry. An example of this is that he said could have said you can come back tomorrow and listen my other half of my story if you want, however instead he demands the reader ‘yu must come back tomorrow’. The ‘must’ emphasises that the writer is serious.  Both of these writers use different type of writing to express the way they feel. Tatamkhula effectively uses metaphors to compare what he feels like and what other people are being treated as. John’s strong use of language makes his poem more effective as he is showing exactly how he feels in the first instant. Both writers’ intentions are similar. They both want the reader to think about and understand what they are going through. They want these problems of racism to stop. Tatamkhula writes about what he sees and feels. An example of this is when writes ‘I press my nose to the dear panes’. Here he is on the other side of the glass from were the white people are sitting. This shows that he is separated from the people. He expresses that although segregation has said to be gone, it is still there. He can see the white people through the glass, however the glass is like a border where he can not pass only because of his colour. John Agard throughout the poem is writing as if he is speaking to the reader. It seems as if he is having a conversation with the reader, ‘excuse me’, I believe that this makes it more interesting, and also encourages the reader to take it more seriously.  He often uses the term ‘half-caste’ to outsmart people who use this term. Although he uses slang he shows that he is aware of the things going an around the world. He says ‘yu mean when Picasso mix red an green is a half-caste canvas’. This is an example of him having good knowledge and yet outsmarting the term ‘half-caste’. Here he is arguing that if Picasso’s paintings can be a mixture of red and green, why can’t he be a mixture of races without being treated as half of a person. Tatamkhula explains how they are treated differently with the example of their food. At the ‘whites only inn’ there is ‘crushed ice’, ‘linen falls’ these both show expense and luxury items. He then compares this with what he is used to which is ‘bunny chows’ and ‘plastic table tops’ This clearly shows that this is not an expensive place, yet more shows it is a cheap place. He then adds further ‘Wipe your fingers on your jeans’ this shows that he is used to doing this, and yet is proud of doing it. He is not ashamed to express the way he is living and feeling. Both writers express their anger continuously through out the poem. They obviously want things to change, and want to be treated equally as everyone else. They express there feelings in form of a poem which they want people to take notice of, and maybe if they are the ones who are causing or doing something to make them feel like this, they would want them to stop instantly.  In my opinion I strongly believe that ‘Nothings changed’ is far more effective. I think this because it expresses more how he feels and what he is going through. Although ‘Half-Caste’ also expresses the writers feelings it is not as effective. This may be because Tatumkhula uses many examples of what he feels like and how he is treated differently.

How Does Same Sex Marriage Affects in Decreasing Population Growth Essay

First, what is MARRIAGE? Marriage is a socially or ritually recognized union or legal contract between spouses that establishes rights and obligations between them, between them and their children. (From that statement, the word children are the most important thing in marriage, WHY? Because we all know having same sex marriage CANNOT produce a child) What is SAME SEX MARRIAGE? ————– Decrease of population growth caused by SAME SEX MARRIAGE Extending the benefits and status of â€Å"marriage† to couples who are intrinsically incapable of natural procreation (two men or two women) would dramatically change the social meaning of the institution. It would become impossible to argue that â€Å"marriage† is about encouraging the formation of life-long, potentially procreative (opposite-sex) relationships. The likely long-term result would be that fewer such relationships would be formed, fewer such couples would choose to procreate, and fewer babies would be born. Long term consequences are not worth the risk. The first and most obvious consequence to allowing gay marriage would be the drastic decrease in population. What if everyone decided that they were a homosexual? It may sound a little extreme, but if that happen the human race as we know it would cease to exist. Facts of decreasing population growth caused by same sex marriage: The effect on the population would be that there would be no children born of that union. Since it takes a male and a female to produce offspring, and since, by definition, a same-sex marriage would contain 2 persons of the same sex, they would contribute 0% to the population growth. Disadvantage of legalizing same sex marriage: 1. The negative side of same-sex marriage is that some see it as godless. 2. It is not acceptable by some religious orders. 3. Some societies ostracise those involved. 4. They can’t have kids w/o outside help. 5. Many countries do not recognise it and any rights associated with ‘normal’ marriage are not given. 6. TOP 10 HARM EFFECTS OF LEGALIZING SAME SEX MARRIAGE: 1. Taxpayers, consumers, and businesses would be forced to subsidize homosexual relationships. If same-sex marriage were legalized, all employers, public and private, large or small, would be required to offer spousal benefits to homosexual couples. You, as a taxpayer, consumer, or small business owner, would be forced to bear the expense of subsidizing homosexual relationships-including their higher health care costs. 2. Schools would teach that homosexual relationships are identical to heterosexual ones. A lesbian who teaches 8th grade sex education in Massachusetts told NPR that she teaches her children how lesbians use â€Å"a sex toy† to have intercourse. If anyone objects, she says, â€Å"Give me a break. It’s legal now.† One father was jailed after protesting because his son-a kindergarten student-was given a book about same-sex couples. 3. Freedom of conscience and religious liberty would be threatened. Churches and non-profit organizations could be stripped of their tax exemptions and religious psychologists, social workers, and marriage counselors could be denied licensing if they â€Å"discriminate† against homosexuals. Individual believers who disapprove of homosexual relationships may face a choice at work between forfeiting their freedom of speech and being fired. 4. Fewer people would marry. In Massachusetts, where same-sex â€Å"marriages† began in May 2004, only 52% of same-sex couples who live together had even bothered to â€Å"marry† by the end of 2006. Among opposite-sex couples, the comparable figure is 91%. In the Netherlands, the figures are even lower, with only 12% of homosexual couples having entered legal civil â€Å"marriages.† Giving the option of same-sex â€Å"marriage† would tell society that marriage in general is â€Å"optional,† not normative, and fewer people would marry. 5. Fewer people would remain monogamous and sexually faithful. Among homosexual men, sex with multiple partners is tolerated and often expected. One study in the Netherlands showed that homosexual men with a steady partner had an average of eight sexual partners per year. If these behaviours are incorporated into what society affirms as â€Å"marriage,† then  fidelity among heterosexuals would likely decline as well. 6. Fewer people would remain married for a lifetime. Even a homosexual psychologist has acknowledged that â€Å"gay and lesbian couples dissolve their relationships more frequently than heterosexual couples.† The same Dutch study that showed the high rate of homosexual promiscuity also showed that the average homosexual male â€Å"partnership† lasts only 1.5 years. As the transience of homosexual relationships is incorporated in society’s image of â€Å"marriage,† we can expect that fewer heterosexuals would maintain a lifelong commitment. 7. Fewer children would be raised by a married mother and father. Social science has clearly proven clearly that children do best when raised by their own married biological mother and father. Yet legalizing same-sex â€Å"marriage† would put an official stamp of approval on the deliberate creation of permanently motherless or fatherless families. As scholar Stanley Kurtz says, this â€Å"would likely speed us on the way towards more frequent out-of-wedlock birth, and skyrocketing family dissolution.† 8. More children would grow up fatherless. Most children who live with only one biological parent will live with their mothers, and lesbian couples are more likely to be raising children than homosexual male couples. Therefore, with same-sex â€Å"marriage,† more children would suffer the specific negative consequences of fatherlessness, which include higher rates of youth incarceration among males and adolescent pregnancy among females. Research also shows negative outcomes for the children of sperm donors, who are used by some lesbian couples. 9. Birth rates would fall. Same-sex â€Å"marriage† would eliminate the incentive for procreation that is implicit in defining marriage as a male-female union. There is already evidence of at least a correlation between same-sex â€Å"marriage† and low birth and fertility rates, both in the U.S. and abroad. While some people still harbour outdated fears about â€Å"over-population,† demographers now understand that declining birth rates harm society. 10. Demands for legalization of  polygamy would grow. If a person’s choice of spouse cannot be limited based on the sex of one’s partner, it is hard to see how it could be limited based on the number of spouses either. This argument is already being pressed in the courts. ADDITIONAL IDEA About same sex marriage The first laws in modern times enabling same-sex marriage were enacted during the first decade of the 21st century. As of 19 August 2013, fifteen countries (Argentina, Belgium, Brazil, Canada, Denmark, France, Iceland, Netherlands, New Zealand, Norway, Portugal, Spain, South Africa, Sweden, Uruguay), and several sub-national jurisdictions (parts of Mexico and the United States), allow same-sex couples to marry. A law has been passed by the United Kingdom, effective in England and Wales, which is expected to be fully in force in 2014. Polls in various countries show that there is rising support for legally recognizing same-sex marriage across race, ethnicity, age, religion, political affiliation, and socioeconomic status. Introduction of same-sex marriage laws has varied by jurisdiction, being variously accomplished through a legislative change to marriage laws, a court ruling based on constitutional guarantees of equality, or by direct popular vote (via a ballot initiative or a refer endum). The recognition of same-sex marriage is a political, social, human rights and civil rights issue, as well as a religious issue in many nations and around the world, and debates continue to arise over whether same-sex couples should be allowed marriage, be required to hold a different status (a civil union), or be denied recognition of such rights. Some analysts state that financial, psychological and physical well-being are enhanced by marriage, and that children of same-sex couples benefit from being raised by two parents within a legally recognized union supported by society’s institutions. Court documents filed by American scientific associations also state that singling out gay men and women as ineligible for marriage both stigmatizes and invites public discrimination against them. The American Anthropological Association avers that social science research does not support the view