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Multiple Choice Quiz
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1

_________________ nerves carry impulses away from the central nervous system.
A)Sensory
B)Motor
C)Afferent
D)Association
2

Which of the following best describes the electrical state of a neuron at rest?
A)The inside of a neuron is more negatively charged than the outside.
B)The outside of a neuron is more negatively charged than the inside.
C)The inside and the outside of a neuron have the same electrical charge.
D)K+ ions leak into a neuron at rest.
3

A nerve impulse is initiated when
A)physical disruption of the cell membrane causes some of its contents, including ions, to leak out.
B)the Schwann cells move to into their new positions.
C)voltage-gated channels close.
D)a reversal in the polarized state of the cell causes it to reach threshold.
4

An action potential travels from one neuron to the next across the synapse using
A)calcium ions.
B)Schwann cells.
C)neurotransmitters.
D)All of these are involved.
5

Synapses are excitatory or inhibitory based on
A)integration.
B)summation.
C)autonomic control.
D)saltatory conduction.
6

Modern-day fish are like early vertebrates in that the dominate part of their brains is the
A)forebrain.
B)midbrain.
C)hindbrain.
D)optic lobes.
7

Much of the sensory, motor, and associative neural activity of the cerebrum occurs on the surface, a layer called the
A)corpus callosum.
B)cerebral cortex.
C)limbic system.
D)basal ganglia.
8

Which is not involved in the knee-jerk reflex?
A)stretching of the muscle
B)motor neuron
C)muscle spindle
D)an interneuron
9

The _____________ cannot be controlled by conscious thought.
A)motor neurons
B)somatic nervous system
C)autonomic nervous system
D)skeletal muscles
10

A fight-or-flight response in the body is controlled by the
A)sympathetic division of the nervous system.
B)parasympathetic division of the nervous system.
C)release of ACh from postganglionic neurons.
D)somatic nervous system.







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