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Oxygen Dissociation Curve

The exchange ...

Question

The exchange of oxygen and carbon dioxide between alveolar air and blood is governed by

A

diffusion

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B

blood pressure

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C

gravity

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D

active transport

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Solution

The correct option is A
diffusion

The exchange of oxygen and carbon dioxide between the alveoli and tissues takes place by simple diffusion according to the respective partial pressure gradients.

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