Question

The oxygen exchange between the red blood cells and the alveoli is driven by diffusion. this diffusion is due to the group of answer choices

O higher amount of oxygen found in the red blood cells.
O lower amount of oxygen found in the red blood cells.
O equal concentration of oxygen between the red blood cells and the alveoli.
O lower amount of carbon dioxide in the red blood cells.

Answer 1

Oxygen exchange between the red blood cells and the alveoli is based on the higher amount of oxygen in the alveoli, and it diffuses due to the existing partial pressure gradient.

Step-by-step explanation:

The oxygen exchange between the red blood cells and the alveoli is driven by diffusion due to the higher amount of oxygen found in the alveoli as compared to the red blood cells. This process is influenced by a pressure gradient where the partial pressure of oxygen is high in the alveoli (approximately 100 mm Hg) and low in the capillary blood (approximately 40 mm Hg), causing oxygen to diffuse into the blood.

Conversely, carbon dioxide diffuses from the blood into the alveoli where it is expelled from the body because its concentration is higher in the blood than in the alveoli.