plase answer

Asked by pranavjain | 1st Aug, 2010, 02:07: PM

Expert Answer:

The tissues use up oxygen and release carbondioxide as byproduct. This carbondioxide diffuses into the surrounding blood capillaries which are poor in carbondioxide. At the same time oxygen from the blood diffuses into the tissues since the tissues are deficient in oxygen.
This deoxygenated blood is then carried to the lungs where carbondioxide is removed from this blood and given out to the alveolar air. At the same time, oxygen from the alveolar air diffuses into the surrounding blood capillaries which is poor in oxygen. This is a continously occuring process since the body keeps on using the oxygen and the deoxygenated blood is brought back to the lungs for oxygenation.

Answered by  | 2nd Aug, 2010, 07:33: AM

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