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List three types of vessels in human circulatory system in tabular form. (3mark) |
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Answer» There are three types of blood vessels ―● arteries● veins● capillaries.\tArteries - carry blood away from the heart as the heart pumps blood into the arteries,the blood flows rapidly and at a high pressure.\tCapillaries - arteries branches into smaller and smaller arteries and finally into capillaries.Capillaries are the thinnest blood vessels, about as thin as a strand of your hair. they have very thin walls through which oxygen, digested food, carbon dioxide and other waste products are exchanged between the blood and the surrounding cells.\tVeins - the capillaries join up to form the veins , which carry the blood back to the heart, veins have thin walls. thy have valves, which allow the blood to flow only towards the heart.\xa0 Atery , vein , capillaries |
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