In contrast to mammals, the lungs of birds are comparatively
A) small and inelastic.
B) large and inelastic.
C) small and more elastic.
D) large and more elastic.
Correct Answer:
Verified
Q12: Lungs in fish originally evolved as a
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)
Q18: Respiration in birds differs from mammals in
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
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