Each alveolus is richly supplied with blood. Why?
Answers
Answer:
Lung alveoli are quite covered with blood capillaries to transfer oxygen to different parts of the body. Oxygen is required by the body cells to get energy for replenishment. Moreover, it also helps the heart to optimize its working efficiency as the oxygen rapidly diffuses into the blood and release carbon dioxide.
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Explanation:
Alveoli are the "terminals" in the lungs where deoxygenated blood is replenished with the oxygen, that is breathed in through the nostrils. I mean if you want a straight up answer, its because the body is not going to compromise on the one factor that is sustaining it - Oxygen. To get the most oxygen into the blood, each alveoli is rich supplied with blood, so that the oxygen breathed in, is used to full efficiency.