Which of the following is not transferred by alveoli ?

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asked Sep 13, 2017 in Science by camila (16,550 points)
A. oxygen
B. blood
C. carbon dioxide
D. gases

1 Answer

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answered Oct 11, 2017 by zoey (76,950 points)

B. blood

An alveolus (plural: alveoli, from Latin alveolus, "little cavity") is a hollow cavity found in the lung parenchyma, and is the basic unit of ventilation . Lung alveoli are the ends of the respiratory tree, branching from either alveolar sacs or alveolar ducts, which like alveoli are both sites of gas exchange with the blood as well. The alveolar membrane is the gas exchange surface. Carbon dioxide rich blood is pumped from the rest of the body into the capillaries that surround the alveoli where, through diffusion, carbon dioxide is released and oxygen absorbed.

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