Blood Composition. The following are components of blood - red blood cells‚ white blood cells‚ platelets and plasma (the liquid component). Red blood cells are the pinky white circles‚ the white blood cells are the big red blobs. Red blood cells do not have a nucleus because they do not divide and multiply Red blood cells are bi-concave‚ they are donut shaped. Red blood cells contain a pigment called haemoglobin which can react with oxygen to form the unstable compound‚ oxy-haemoglobin. Hb+4O2
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seconds‚ someone is in desperate need of blood. So I’ll like too speak something regarding blood donation… We all need blood to survive‚ but for sick children‚ accident victims and cancer patients just to name a few – a shortage of donated blood means the difference between life and death. Today we have bio technologically engineered human organ that can be transplanted at time of need. But there is no substitute for blood. Blood donors are the only source of blood for these sick children‚ accident victims
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Hormones can react to increase blood pressure when it becomes low‚ the sympathetic division of the autonomic nervous system uses several ways to temporarily increase blood pressure when it has dropped for example during the fight or flight response. During the response‚ the sympathetic division is needed to stimulate the adrenal glands to release the hormones epinephrine and norepineprine which stimulate the heart to beat faster and for blood to flow more forcefully‚ this effect makes most of the
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and my blood came into view. I felt horrified when the doctor squeezed my finger and I saw my own blood smear onto my skin. Immediately‚ I sensed that I would never outgrow my fear of blood. My imagination overpowered my reasoning at such a young age; my first experience with a piercing needle made me think that I could never handle blood and would always squeamishly tremble at its sight. Although I have always wanted to help those in need‚ I repeatedly rejected the idea to ever donate blood during
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Blood Cells Leukocytes (WBC’s) Leukocytes also known as white blood cells (WBCs) are cells which play a defensive roll in the body against injury and infection. They migrate towards tissues where they are needed and become functional performing various activities. WBCs can be divided into 2 groups: Polymorphonuclear granulocytes and mononuclear agranulocytes. Both types are spherical while suspended in blood plasma but when they invade tissues after leaving the blood vessels they become amoeboid
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The issue of blood sports has been gradually becoming significant over the past years‚ where influences have been seen in animals. Some advocate that blood sports should be banned‚ whereas some oppose to the idea. It appears that blood sports are considered to be popular activities in a number of places‚ which represents that some population enjoy this particular sport for several reasons. Rumour has it that blood sport is one way to bring excitement to life for both the contestants and audience
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History Period 1 DBQ Essay The Cold War began over a period of several years following World War II as a result of increasing political and ideological tensions between the USSR and the USA; the weapons used were political and technological‚ in that many different types of strategies were utilized. Speeches given by world leaders provide evidence of the escalation of tensions between the two countries. The arms race played a major part in the Cold War‚ but other factors contributed to the
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BLOOD DONATION CAMP The Blood Donation Camp was hosted by St. John’s Medical Hospital on 18th December‚ 2012. 5 Doctors and 15 nurses had come to college and set up their hospital requirements in the Auditorium. The donation camp began at 10.30 am when various students had come forward to donate blood. Unfortunately for some‚ due to reasons like low blood count‚ blood pressure‚ recovery from various diseases‚ etc. they could not do so. Candidates who were not able to donate blood surely went disappointed
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Juan Villacis COMM 1402-02 December 9‚ 2013 Title: MORE PEOPLE SHOULD DONATE BLOOD. I. Introduction A. Attention Getter: How many people have donated blood before? Does anybody know how many people can be saved by one donation? One donation can help save the lives of up to three people and since blood is an essential substance that cannot be manufactured‚ It can only come from volunteer donors (RedCrossBlood.org.‚2013) B. Tie to Audience: Many people feel scared when they see needles and most
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The Cold War began because of a clash between two world superpowers‚ the United States and the USSR. These two countries were in a battle for superiority but this battle never once led to a ’hot’ war as the United States and the USSR never actually fired at each other. The main reason there was such an initial clash between these superpowers is that each country had completely different ideologies. The USSR functioned in a Communist fashion and the United States operated with Capitalism. The
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