Nerve tracts or fasciculi make up the
A) central canal.
B) posterior gray horns.
C) gray commissures.
D) white columns.
E) anterior gray horns.
D
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What system would suppress the digestive organs during times of greater physical activity?
a. sympathetic b. parasympathetic c. enteric nervous system d. somatic nervous system e. none of these
The advantage of having many nuclei in a skeletal muscle fiber is the ability to
What will be an ideal response?
The cilia in the olfactory mucosa don't move, while the cilia in the respiratory mucosa do.
a. true b. false
Which of the following statements regarding melanin is true?
A. Men produce more melanin than women. B. In Addison's disease, less melanin is produced. C. During pregnancy melanin production is increased. D. Both melanocytes and keratinocytes produce melanin. E. Melanin is a white pigment.