During inspiration in mammals the
A) external intercostal muscles contract.
B) internal intercostal muscles contract.
C) external intercostal muscles relax.
D) internal intercoastal muscles relax.
E) abdominal muscles contract.
Correct Answer:
Verified
Q16: Air capillaries are found in
A) mammals.
B) reptiles.
C)
Q17: In contrast to mammals, the lungs of
Q18: Respiration in birds differs from mammals in
Q19: Thoracic wall and lungs remain in close
Q20: In birds, one breathing cycle is made
Q22: During passive expiration
A) diaphragm relaxes.
B) external intercostal
Q23: As inspiration begins, the intra-alveolar pressure is
A)
Q24: The intrapleural pressure
A) falls before inspiration.
B) falls
Q25: Hemoglobin may increase in animals as a
Q26: Pulmonary ventilation is the product of
A) residual
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