1. The control
center for the entire body which includes the brain and the spinal cord is
a. peripheral nervous system b. central nervous system c. autonmic nervous system
d. somatic nervous system e. sympathetic nervous system
2. Nerves which convey impulses from the
periphery to the spinal cord are
a. afferent b. efferent c.
association d. ganglia e. nuclei
3. Cells which supply support and protection
to the central nervous system are called
a. neurons b. neuroglia c. Schwann
cells d. neurolemma e. myelin
4. A neurotransmitter is released at a(an):
a. electrical
synapse b. neuroglial cell membrane c. chemical synapse d. axon hillock
5. Bundles of myelinated neuronal processes
in the central nervous system are
a. ganglia b. nuclei c.
tracts d. nerves e. commissures
6. Cerebrospinal fluid is circulated by which
cells?
a. astrocytes b. Schwann c. microglia d. ependyma
7. Neurons with several dendrites and one
axon would be classified by structure as
a. multipolar b. bipolar c. unipolar d. nonpolar e. polar
8. These fibers
conduct nerve impulses from the central nervous system to smooth muscle, cardiac
muscle, glands, and skeletal muscle:
a. afferent b. autonomic c.
somatic d. efferent
9. An action
potential is generated when a threshold signal reaches the
a. cell body b. axon terminal c.
axon hillock d. dendrite e. receptor
10. Neurons that
conduct impulses from the central nervous system to skeletal muscle are part
which nervous system?
a. somatic b. autonomic c.
sympathetic d. parasympathetic
11. Cells which are
excitable and highly specialized for conduction of nerve impulses are
a. microglia b. neurons c.
ependymal cells d. Schwann cells e. oligodendrocytes
12. Action
potentials are conducted more rapidly when
a. the axon is myelinated b. the axon is small in diameter
c. the axon is long d. the dendrite is thick is diameter
13. The action
potential can jump at the on the
myelinated axon in saltatory conduction.
a. dendrites b. nodes of Ranvier c.
axon terminals d. synaptic cleft
14. These
supporting cells in the central nervous system form the myelin
a. oligodendroctyes b. Schwann cells c. ependymal cells d.
astrocytes e. satellite cells
15. The supporting
cells that are phagocytes:
a. Schwann cells b. oligodendrocytes c. astrocytes d. ependymal cells e.
microglia
16. Restoring the
membrane potential to the resting state is
a. stimulation b. action potential c.
depolarization d. repolarization
17. The major ion
that moves into the neuron with depolarization:
a. sodium b. potassium c.
chloride d. magnesium e. oxygen
18.
Hyperpolarization is due to exiting of ___________ions.
a. calcium b. sodium c.
potassium d. chloride
19. The removal of
neurotransmitters from the chemical synapse is by an enzyme or
a. reuptake b. voltage gated channels c.
ATP pumps d. simple diffusion
20. Which of the
following is true for mature neurons?
a. They have no nucleus. b. They do not undergo mitosis.
c. They do not use ATP. d. Oxygen is not essential.
21. Which of the
following is not considered a neurotransmitter?
a. acetycholine b. norepinephrine c.
dopamine d. caffeine
22. A
neurotransmitter that is inhibitory would cause the membrane to
a.depolarize b. repolarize c.
hyperpolarize
23. A
neurotransmitter is released at the synapse and generates a depolarization of
the postsynaptic neuron. This is an
a. EPSP (excitatory postsynaptic
potential) b. IPSP (inhibitory
postsynaptic potential)
c. threshold d. action potential e.
all of the above
24. A bundle of
fibers (axons or dendrites) in the peripheral nervous system are
a. tracts b. nuclei c.
nerves d. ganglia
25.Ischemia can
lead to neuronal damage due to lack of
a. carbon dioxide and glucose b. glucose and oxygen
c. oxygen and carbon dioxide d. metabolic enzymes e. protein synthesis
Answer Key for Sample Exam #3
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1.B |
21.D |
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2.A |
22.C |
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3.B |
23.A |
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4.C |
24.C |
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5.C |
25.B |
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6.D |
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7.A |
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8.D |
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9.C |
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10.A |
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11.B |
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12.A |
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13.B |
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14.A |
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15.E |
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16.D |
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17.A |
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18.C |
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19.A |
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20.B |
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