Term
One function of the somatic nervous system that is NOT performed by the autonomic nervous system is conduction of impulses:
a) to involuntary muscles and glands
b) to the central nervous system
c) to skeletal muscles
d) between the brain and spinal cord |
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Definition
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Term
Neurons that carry impulses away from the CNS are called:
a) afferent neurons
b) sensory neurons
c) efferent neurons
d) associated neurons |
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Definition
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Term
Neurons are specialized for the conduction of impulses, whereas neuroglia:
a) support nerve tissue
b) serve as motor end plates
c) synthesize acetylcholine and cholinesterase
d) all of the above |
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Definition
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Term
There is one-way conduction at a synapse because:
a) only postsynaptic neurons contain synaptic vesicles
b) acetylcholine prevents nerve impulses from traveling in both directions
c) only the presynaptic neuron contains neurotransmitters
d) only dendrites release neurotransmitters |
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Definition
| c - only the presynaptic neuron contains neurotransmitters |
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Term
Which contains the thalamus and hypothalamus?
a) diencephalon
b) cerebrum
c) medulla oblongata
d) brain stem |
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Definition
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Which phrases best describe the spinal cord? (More than one answer may apply)
a) descends inferior to the lumbar vertebrae
b) conducts motor impulses from the brain
c) descends to the fourth lumbar vertebrae
d) conducts sensory impulses to the brain |
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Definition
| b, d - conducts motor impulses from the brain, conducts sensory impulses to the brain |
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Term
Which is NOT a protective covering of the CNS?
a) cauda equine
b) dura matter
c) arachnoid
d) cranial bone |
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Definition
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Term
The composition of cerebrospinal fluid is:
a) the same as blood
b) distilled H2O with dissolved salts
c) a plasma-like liquid with glucose, salts, and proteins
d) a heavy mucous solution with dissolved salts, glucose, and urea |
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Definition
| c - a plasma-like liquid with glucose, salts, and proteins |
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Term
An autonomic ganglion can be described as:
a) the site of synapses between visceral efferent neurons
b) a site where spinal reflexes occur
c) a point of synapse between parasympathetic and sympathetic neurons
d) the place where unconscious sensations occur |
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Definition
| a - the site of synapses between visceral efferent neurons |
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Term
The sympathetic division of the autonomic nervous system:
a) mobilizes energy in times of need
b) in innervated by cell bodies from T1 through L2
c) in innervated by cell bodies located in the cranial nerve nuclei
d) both a and b are correct
e) both a and c are correct |
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Definition
| d - both a and b - mobilizes energy in times of need, is innervated by cell bodies from T1 through L2 |
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Term
The parasympathetic division of the autonomic nervous system:
a) conserves and stores energy
b) has relatively short postganglionic neurons
c) both a and b
d) has paravertebral ganglia |
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Definition
| c - both a and b - conserves and stores energy, has relatively short postganglionic neurons |
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