Summary: Circulatory System
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Read the summary and the most important questions on circulatory system
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1 blood composition
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Of what does a suspension consist?
blood cells and platelets in a watery solution. -
Which other substances does plasma carry aswel?
oxygen (small amount), nutrients and waste products like carbon dioxide and urea around the body. -
What do white blood cells do?
they protect you in different ways. When bateria enter the body certain white blood cells destroy the germs by engulfing and then digesting them. -
What is the pus in a infected wound?
it contains dead white blood cells and killed bacteria. -
How do platelets help blood clotting?
they contain substances that help blood clot when outside the vessels. -
2 blood circulation
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What does the right side of the heart do?
it pumps blood into both lungs and then bak to the heart again. In both lungs, blood becomes oxygenated, because it picks up oxygen. At the same time it ets rid of carbon dioxide. -
Why is it called double circulatory system?
because it passed the heart twice during one circuit of the body -
3 the heart
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What are the coronary arteries?
they y supply the heart mucles with oxygen and nutrients. They branch form the main artery. -
What are the coronary veins?
they carry blood that contains carbon dioxide and other waste products away from the heart muscles. They pour directly into the right atrium. -
What are the upper two chambres called?
atria
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