Question

Gas exchange takes place - a) across alveolar capillary membrane b) across tissue capillary c) both d) none​

Answer 1

Answer:

a) Across alveolar capillary membrane.

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Answer 2

Answer:

Gas exchange takes place across alveolar capillary membranes.

• The alveolar membrane is made of epithelial tissue and is surrounded by blood capillaries.

• When the oxygen reaches the alveoli it gets diffused into the blood and is transported to different parts.

• Similarly, the carbon dioxide formed as a result of cellular respiration is transported by the blood from different parts of the body and it gets diffused back into the alveoli and is respired out through expiration.