Question

Oxygen diffuses in which direction in the alveolus pictured above?

Answer 1

Answer:

Oxygen and carbon dioxide move across the respiratory membrane, which includes the alveolus and pulmonary capillary. As you can see from the image below, oxygen moves out of the alveolus into the capillary, while carbon dioxide moves in the opposite direction - hence, the term gas exchange.

Explanation:

Answer 2

Answer:

where's the picture? I can't answer it without it