Practice question

MCQ

Question

Which of the following statements regarding pulmonary ventilation is incorrect?

Options

Choose one · Correct answer highlighted

Inspiration occurs due to the contraction of the diaphragm and external intercostal muscles. Expiration is always an active process. Correct Lung expansion occurs when thoracic volume increases. During expiration, the intrapulmonary pressure exceeds atmospheric pressure.

Explanation

Normal expiration is a passive process, not an active one. It occurs due to the relaxation of respiratory muscles.

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