Question

Which statements explain the gas exchange that happens at the alveoli? Check all that apply.

Answer 1

Answer: B, C, E

Explanation:

We breathe in oxygen, which travels to the alveoli in our lungs. The alveoli "gives" oxygen to the capillaries, which carry blood. The capillaries "give" its carbon dioxide (which is what oxygen becomes when used by our body) to the alveoli. The carbon dioxide travel back out when we exhale. Although, the air we breathe out has some oxygen content.