If PCO₂ is lower in the alveoli than in the blood, CO₂ will diffuse from the blood in the pulmonary capillaries into the air in the alveoli.

Question

Quizplus · Accepted Answer

This statement is true. Diffusion occurs from an area of higher concentration to an area of lower concentration, so if PCO₂ is higher in the blood than in the alveoli, it will diffuse from the blood into the air in the alveoli.

If PCO2 Is Lower in the Alveoli Than in the Blood

If PCO₂ Is Lower in the Alveoli Than in the Blood