Biology (Raven), 10th Edition

Chapter 43: The Nervous System

Pre-Test

1
Which subdivision of the vertebrate nervous system acts primarily on skeletal muscles?
A)somatic
B)peripheral
C)autonomic
D)central
E)sympathetic
2
What ion or substance flows from the outside of a neuron to the inside during the propogation of an action potential, thereby causing the adjacent region to depolarize and produce its own action potential?
A)K+
B)Ca+2
C)glucose
D)Na+
E)amino acids
3
Which substance acts as a neurotransmitter?
A)acetylcholine
B)amino acids
C)biogenic amines
D)neuropeptides
E)All selections are correct.
4
Which of these is NOT a division of the vertebrate brain?
A)optic tectum
B)hindbrain
C)midbrain
D)forebrain
E)diencephalon
5
Which neurons stimulate skeletal muscles in response to conscious commands and involuntary reflexes?
A)autonomic
B)somatic motor
C)sensory
D)sympathetic
E)hyperpolarized
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