which-process-occurs-in-the-alveoli-during-external-respiration

Question

Which process occurs in the alveoli during external respiration?

Accepted Answer

Oxygen diffuses from alveoli to blood, and carbon dioxide diffuses from blood to alveoli.

Answer

No gas exchange occurs in alveoli.

Answer

Oxygen and carbon dioxide both diffuse from alveoli to blood.

Answer

Oxygen diffuses from blood to alveoli, and carbon dioxide diffuses from alveoli to blood.