L10: Sympathetic and Parasympathetic Nervous System

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18 Terms

1
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True or False: The parasympathetic nervous system consists of a CRANIAL component originating in the brain stem.

TRUE

2
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What are the cranial components of the parasympathetic nervous system?

  • CN III

  • CN VII

  • CN IX

  • CN X

3
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What does cranial nerve III innervate in the parasympathetic nervous system?

Pupillary constrictor muscle

4
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What does CN VII innervate in the parasympathetic nervous system?

  • lacrimal gland (tears)

  • Submandibular and sublingual glands (salivary)

5
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What does CN IX innervate in the parasympathetic nervous system?

Parotid gland (salivary)

6
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What does CN X innervate in the parasympathetic nervous system?

Thoracic and abdominal visceral

7
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The cervical sympathetic trunk is located (anterior/posterior) to the carotid arteries?

POSTERIOR

8
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Pregangliionic nerve fibers originate from the upper ___ level of the spinal cord (T?-T?) and synapse in a cervical paravertebral ____.

  • thoracic

  • T1-T5

  • Ganglia

9
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In regards to innervation of the thoracic viscera, preganglionic fibers originate where?

Upper thoracic spinal cord

(T1-T5)

10
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In regards to innervation of the thoracic viscera, where to preganglionic nerve fibers synapse?

Upper thoracic paravertebral sympathetic ganglion

11
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Where does the parasympathetic innervation of the thoracic viscera come from?

CN X- vagus nerve

12
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in regards to the sympathetic supply to the abdominal viscera, preganglionic fibers synapse where?

With prevertebral ganglia located in the abdomen

13
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List the thoracic splanchnic nerves.

  • greater splanchnic nerves- arise from the T5-T9

  • Lesser splanchnic nerves- arise from the T10-T11

  • Least splanchnic nerves- arise from T12

  • Upper lumbar splanchnic nerve- arise from L1-L2

14
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In terms of abdominal viscera autonomic parasympathetic innervation, what nerve provides innervation to the proximal and middle GI tract?

Vagus nerve

15
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In terms of the abdominal viscera autonomic parasympathetic innervation, what nerves supply innervation to the distal GI tract?

Pelvic splanchnic nerves (from S2-S4)

16
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What two nerves sympathetically supply the pelvic viscera?

  • lumbar splanchnic nerves from the lower lumbar sympathetic ganglia, L3 and L4

  • Sacral splanchnic nerves from the sacral sympathetic ganglia

17
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What nerves parasympathetically supply the pelvic viscera?

Pelvic splanchnic nerves S2-S4

18
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What spinal regions sympathetically innervate the body wall, upper extremities, and lower extremities?

  • body wall:T1-L1

  • upper extremity- C2-C8

  • lower extremity- L3-Co