Question

16/35 which statement is correct? at the alveoli carbon dioxide isnt exchanged at the alveoli oxygen moves from a high pp in the alveoli to a low pp in the capillaries at the alveoli oxygen moves from a low pp in the alveoli to a high pp in the capillaries at the alveoli carbon dioxide moves from high pp in the alveoli to a low pp in the capillaries

Explanation:

Gas exchange in the alveoli occurs based on the principle of diffusion. Oxygen diffuses from an area of high partial - pressure (pp) in the alveoli to an area of low pp in the capillaries, while carbon - dioxide diffuses from an area of high pp in the capillaries to an area of low pp in the alveoli.

Answer:

At the alveoli oxygen moves from a high pp in the alveoli to a low pp in the capillaries