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The superior mesenteric ganglion receives preganglionic sympathetic neurons from the _______ segments of the spinal cord.


A) T1-T4
B) T2-T6
C) T5-T9
D) T7-T9
E) T10-T12

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

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Both the cardiac plexus and the _______ plexus consist of postganglionic sympathetic axons from the thoracic sympathetic trunk ganglia and preganglionic axons from the vagus nerve.

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Which is not true about the autonomic nervous system (ANS) ?


A) The ANS is part of both the CNS and the PNS.
B) ANS functions are involuntary.
C) The ANS does not use sensory neurons.
D) ANS motor neurons innervate cardiac muscle fibers,smooth muscle fibers,and glands.
E) ANS motor pathways always include two neurons.

F) A) and E)
G) A) and B)

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Gray rami from the sympathetic trunk connect to


A) alternating spinal nerves.
B) the cranial nerves.
C) every fourth spinal nerve.
D) all spinal nerves.
E) None of the choices is correct; the gray rami carry impulses to the sympathetic trunk.

F) C) and E)
G) A) and B)

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Which autonomic plexus innervates viscera within the pelvic region?


A) Esophageal plexus
B) Pulmonary plexus
C) Abdominal aortic plexus
D) Hypogastric plexus
E) Cardiac plexus

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

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Which statements are correct concerning the parasympathetic division of the ANS? A: Preganglionic neuron cell bodies are located in brainstem nuclei. B: Preganglionic neuron cell bodies are located in the lateral horns of the T1-L2 regions. C: It participates in the "fight-or-flight" response. D: It maintains homeostasis. E: Preganglionic neuron cell bodies are located in the sacral region of the spinal cord.


A) a,d,e
B) a,c,e
C) b,c,d
D) b,c
E) c,d,e

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

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Which sympathetic pathway involves a preganglionic neuron that synapses with a ganglionic neuron in a sympathetic trunk ganglion,but the postganglionic axon does not leave the trunk via a gray ramus?


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) A) and C)
G) A) and E)

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The parasympathetic autonomic responses associated with defecation and urination are processed and controlled at the level of the


A) brainstem.
B) hypothalamus.
C) spinal cord.
D) cerebellum.
E) limbic center.

F) C) and E)
G) A) and B)

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With respect to divergence of axons in the sympathetic division of the ANS,one axon innervates fewer than four ganglionic cell bodies.

A) True
B) False

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The somatic nervous system is capable of both the excitation and inhibition of effectors.

A) True
B) False

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Postganglionic axons from the celiac ganglion innervate the


A) stomach.
B) spleen.
C) liver.
D) gallbladder.
E) All of the choices are correct.

F) All of the above
G) A) and C)

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The sympathetic division outflow that results in innervation of the pelvic organs has its spinal cord segment origin at


A) T1-T2.
B) T1-L2.
C) T1-T4.
D) T5-T12.
E) T10-L2.

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

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Neuronal __________ occurs when axons from numerous preganglionic cells synapse on a single ganglionic cell.

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The lack of extensive divergence of parasympathetic preganglionic axons prevents the mass activation seen in the sympathetic division.

A) True
B) False

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The glossopharyngeal nerve innervates the


A) parotid salivary gland.
B) large intestine.
C) lacrimal gland.
D) sublingual salivary gland.
E) ciliary muscle.

F) B) and C)
G) All of the above

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The first of the two ANS motor neurons is the ______ neuron.


A) preganglionic
B) postganglionic
C) terminal
D) neuronal
E) posterior

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

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The sympathetic division of the ANS has


A) long postganglionic axons.
B) norepinephrine as a transmitter substance.
C) short preganglionic axons.
D) preganglionic neuron cell bodies in the T1-L2 regions of the spinal cord.
E) All of the choices are correct.

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

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The postganglionic axons from the superior mesenteric ganglion innervate


A) the distal half of the duodenum.
B) part of the pancreas.
C) part of the small intestine.
D) the proximal part of the large intestine.
E) All of the choices are correct.

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

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White rami communicantes carry preganglionic sympathetic axons from the T1-L2 spinal nerves to the sympathetic trunk.

A) True
B) False

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The autonomic nervous system may receive input from visceral sensory neurons.

A) True
B) False

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