Motor fibers travel in the ________ of the spinal cord.

A) descending tract
B) medial tract
C) posterior tract
D) ascending tract
E) None of the answers are correct.


A) descending tract

Anatomy & Physiology

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What will be an ideal response?

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Many factors modify metabolic rate. Which one increases metabolic activity?

A) increasing exercise B) aging C) hypothermia (lowered body temperature) D) obesity

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In simple inheritance,

A) phenotypic characteristics are determined by a single pair of alleles. B) phenotypic characteristics are determined by multiple alleles. C) phenotypic characteristics are determined by the action of two genes. D) phenotypic characteristics are controlled by regulator genes on a chromosome other than the one that has the structural genes. E) phenotypic characteristics are determined by the genes on the Y chromosome.

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The anterior root of a spinal nerve contains

a. axons of both motor and sensory neurons. b. axons of sensory neurons only. c. interneurons. d. axons of motor neurons only.

Anatomy & Physiology