In the peripheral nervous system, Schwann cells participate in the repair of damaged nerves by
A) producing new axons.
B) regenerating cell bodies for the neurons.
C) forming a cellular cord that directs axonal regrowth.
D) clearing away cellular debris.
E) producing more satellite cells that fuse to form new axons.
C
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In the the "rule of nines," the perineum accounts for ________ percent of the body surface area.
A. 18 B. 9 C. 4.5 D. 1
The central principle of physiology is
A) nutrition. B) reflexes. C) homeostasis. D) stimulation. E) temperature regulation.
The function of pulmonary ventilation is to
A) remove carbon dioxide from the blood. B) supply oxygen to the blood. C) maintain adequate alveolar ventilation. D) remove air from dead air space. E) prevent gas exchange in the bronchioles.
Which type of muscle is found only in the heart?
a. cardiac b. skeletal c. smooth d. nervous