Respiration in birds differs from mammals in that birds have
A) lungs used for gas exchange only.
B) a comparatively higher tracheal volume.
C) air capillaries.
D) air sacs for ventilation.
E) all of these.
Correct Answer:
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Q13: Air enters from the buccal cavity into
Q14: The most complex respiratory system among vertebrates
Q15: In birds and mammals, the surface area
Q16: Air capillaries are found in
A) mammals.
B) reptiles.
C)
Q17: In contrast to mammals, the lungs of
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)
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