The intrapleural pressure
A) falls before inspiration.
B) falls during expiration.
C) falls during inspiration.
D) remains constant.
E) falls before expiration.
Correct Answer:
Verified
Q19: Thoracic wall and lungs remain in close
Q20: In birds, one breathing cycle is made
Q21: During inspiration in mammals the
A) external intercostal
Q22: During passive expiration
A) diaphragm relaxes.
B) external intercostal
Q23: As inspiration begins, the intra-alveolar pressure is
A)
Q25: Hemoglobin may increase in animals as a
Q26: Pulmonary ventilation is the product of
A) residual
Q27: Too little alveolus ventilation in comparison to
Q28: Decrease in alveolar oxygen concentration causes
A) vasoconstriction
Q29: Thickness of the barriers separating the air
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