Autonomic NS Flashcards

1
Q

What does the autonomic NS innervate?

A
  1. Internal organ systems
  2. Smooth muscles
  3. Glandular tissues
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2
Q

What are the two divisions of the ANS?

A
  1. sympathetic

2. parasympathetic

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3
Q

Sympathetic fibers arise from the ________ horn of the SC.

A

lateral

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4
Q

What spinal level do the sympathetic fibers arise from?

A

T1-L2

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5
Q

What are the two possible courses of action of the sympathetic fibers?

A
  1. Synapse at the para-vertebral ganglia and distribute to the thorax, head, neck and limbs
  2. Bypass the para-vertebral ganglia, form the splanchnic nerves, synapse in pre-vertebral ganglia i the abdomen and supply the abdomen and pelvis
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6
Q

The parasympathetic fibers arise either from nuclei in the ________ of from the _____ ______ of the spinal cord.

A

brainstem; lateral horn

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7
Q

What spinal levels do the parasympathetic fibers arise from?

A

S2-S4

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8
Q

What cranial nerves distribute parasympathetic fibers?

A

CN III, VII, IX, X

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9
Q

Where do the parasympathetic fibers arising from cranial nerves supply?

A

head and neck, thorax and abdominal viscera down to left 1/3 of transverse colon

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10
Q

Where do the parasympathetic fibers originating from the SC supply?

A

remaining abdominal viscera and all pelvic viscera

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11
Q

The parasympathetic fibers all synapse at the ________ ganglion prior to supplying target organ.

A

visceral

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12
Q

Parasympathetic fibers may supply limbs (T/F).

A

FALSE

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