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_______ nerves are composed of preganglionic sympathetic axons that did not synapse in a sympathetic ganglion.

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The preganglionic sympathetic neuron cell bodies are housed in the


A) anterior columns of the spinal cord.
B) posterior columns of the spinal cord.
C) sympathetic trunk.
D) lateral horns of the T1-L2 segments of the spinal cord.
E) paravertebral ganglia.

F) B) and D)
G) B) and C)

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The sympathetic division of the ANS is also called the thoracosacral division.

A) True
B) False

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Parasympathetic activity is responsible for increased smooth muscle motility and secretory activity in digestive tract organs.

A) True
B) False

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The postganglionic axons of the sympathetic branch of the ANS are considered short.

A) True
B) False

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The abdominal _______ plexus consists of the celiac plexus,superior mesenteric plexus,and inferior mesenteric plexus.

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Specific prevertebral ganglia are named after the


A) effector organ stimulated by the postganglionic axon.
B) major abdominal arteries around which they are found.
C) vertebra from under which the preganglionic axon travels.
D) distance from the corresponding parasympathetic ganglion.
E) early anatomist who discovered and described them.

F) None of the above
G) C) and E)

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The superior mesenteric ganglion of the sympathetic branch of the ANS is adjacent to the origin of the superior mesenteric artery.

A) True
B) False

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Parasympathetic ______________ axons are longer than their counterparts in the sympathetic division.

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Which sympathetic pathway involves only a preganglionic axon going to the effector organ?


A) Splanchnic nerve pathway
B) Adrenal medulla pathway
C) Postganglionic sympathetic nerve pathway
D) Spinal nerve pathway
E) None of these answers involve only a sympathetic preganglionic axon.

F) A) and E)
G) D) and E)

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The parasympathetic postganglionic axons that travel to the pupillary constrictor muscle result in pupil ________ when the eye is exposed to bright light.

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The CN that supplies parasympathetic innervation to the thoracic organs is


A) CN II.
B) CN III.
C) CN VI.
D) CN IX.
E) CN X.

F) C) and D)
G) B) and E)

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The parasympathetic division of the ANS is also called the craniosacral division.

A) True
B) False

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The arrector pili muscles receive their sympathetic innervation via the


A) splanchnic nerve pathway.
B) adrenal medulla pathway.
C) postganglionic sympathetic nerve pathway.
D) spinal nerve pathway.
E) None of the choices is correct.

F) None of the above
G) A) and E)

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Postganglionic axons are


A) myelinated.
B) unmyelinated.
C) sometimes myelinated and sometimes unmyelinated.

D) B) and C)
E) All of the above

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White rami appear white in color due to the fact that they are ___________.

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Parasympathetic stimulation of the ciliary muscles allows one to see close-up objects.

A) True
B) False

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The preganglionic axons of CN III extend to the _______ ganglion.


A) pterygopalatine
B) submandibular
C) otic
D) pelvic
E) ciliary

F) None of the above
G) All of the above

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The sympathetic trunks are located


A) superior to the brachial plexus.
B) inferior to the sacral plexus.
C) immediately lateral to the vertebral column.
D) lateral to prevertebral ganglia.
E) in the craniosacral regions.

F) A) and E)
G) None of the above

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The two divisions of the autonomic nervous system,sympathetic and parasympathetic,


A) use preganglionic and postganglionic neurons to innervate skeletal muscle.
B) contain autonomic ganglia to house ganglionic neurons.
C) are voluntary.
D) are composed of PNS structures only.
E) function only during sleep.

F) A) and C)
G) B) and D)

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