Which of the following does not occur during expiration when a person is breathing quietly?
A) The size of the thoracic cavity is reduced.
B) The intra-alveolar pressure becomes greater than atmospheric pressure.
C) Air flows out of the lungs.
D) The expiratory muscles contract.
E) Intrapleural pressure remains less than intra-alveolar pressure.
Correct Answer:
Verified
Q33: The vital capacity is
A)the volume normally entering
Q34: Which factor would result in bronchoconstriction?
A)sympathetic stimulation
B)parasympathetic
Q35: Without pulmonary surfactant,
A)small alveoli would tend to
Q36: During forceful expiration,
A)accessory expiratory muscles contract
B)internal intercostals
Q37: Which of the following would not be
Q39: Pulmonary surfactant
A)is secreted by Type II alveolar
Q40: Normal expiration is brought on by
A)contraction of
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