Saturday, October 24, 2009 ; Blood Vessels
You only need to know what material the blood vessels carry, like those from the heart to the lungs and to other parts of the body and those from the lungs and other parts of the body to the heart. You need not know the function of artery, vein and capillary.
Basically, artery is blood vessel that transports blood from the heart. Most arteries carry oxygenated blood except the pulmonary artery or aorta which carries deoxygenated blood to the lungs.
Vein is blood vessel that transport blood to the heart. Veins usually carry deoxygenated blood, except the pulmonary vein which carries oxygenated blood from the lungs to the heart.
Capillaries are just extremely narrow blood vessels that branch out from arteries and capillaries. They're like twigs that branch out from branches and stem of huge trees. It is semi-permeable so that food and oxygen and waste material like carbon dioxide can be exchanged with the tissue cells.
Nothing about artery, vein, capillary and the picture below will be tested unless the question provides information.
posted by Allan at
8:30 PM
2 Comments:
it will not be tested in exam rite ??? o.o
Nope. Only the content of oxygen and carbon dioxide in the blood travelling to and from heart.
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