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Pre-Test
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1
The most efficient respiratory machines that have ever evolved among organisms are the
A)gills of bony fish.
B)lungs of humans.
C)skin of amphibians.
D)trachea of grasshoppers.
2
Air is drawn into the lungs by the creation of negative pressure.
A)True
B)False
3
Mammals have less metabolic demands for oxygen than do reptiles.
A)True
B)False
4
The air that remains in the lungs after a maximal expiration is the
A)tidal volume.
B)vital capacity.
C)residual volume.
D)lung volume.
5
Which of the following are used in respiration?
A)Skin
B)Spiracles
C)Gills
D)All of the above





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