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Question 22

For quiet exhalation in the respiratory system, which statements are true? Select all that apply.

  1. Inspiratory muscles relax.Bonne réponse
  2. Elastic recoil helps reduce chest volume.Bonne réponse
  3. The diaphragm contracts downward to shrink the chest.
  4. Alveoli actively pump air out.

Explication

When inspiratory muscles relax, elastic tissues recoil and chest volume decreases, moving air outward. A downward diaphragm contraction enlarges the chest for inhalation, so it does not explain ordinary quiet exhalation.

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Question 22: For quiet exhalation in the respiratory system, which… · Human Body Systems · Questena