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

Anatomy & Physiology

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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.

Anatomy & Physiology

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

Anatomy & Physiology

The advantage of having many nuclei in a skeletal muscle fiber is the ability to

What will be an ideal response?

Anatomy & Physiology

The cilia in the olfactory mucosa don't move, while the cilia in the respiratory mucosa do.

a. true b. false

Anatomy & Physiology