During external respiration, the PCO₂ is greater in the blood of the pulmonary capillaries than in the alveoli.

Name: During external respiration, the PCO₂ is greater in the blood of the pulmonary capillaries than in the alveoli.
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Question

Quizplus · Accepted Answer

During external respiration, carbon dioxide diffuses from the blood in the pulmonary capillaries, where its partial pressure (PCO₂) is higher, into the alveoli, where its partial pressure is lower, facilitating its exhalation from the body.

During External Respiration, the PCO₂ Is Greater in the Blood