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AS II - Test 2 > ANS > Flashcards

ANS Flashcards

1
Q

Location of soma of preganglionic fibers? Postganglionic fibers?

(CNS vs PNS)

A

soma of pre in CNS

soma of post in PNS

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2
Q

location of soma of preganglioinic sympathetic neurons

A

lateral horn of spinal cord (intermediolateral cell column)

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3
Q

Where do preganglionic sympathetic fibers go?

A
  • synapse in sympathetic chain at same level
  • ascend or descend in sympathetic chain/trunk prior to synapsing at another level
  • pass through sympathetic chain and synapse at prevertebral ganglia (like celiac, superior mesenteric, etc)
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4
Q

sympathetic chain ganglia formed by?

A

postganglionic sympathetic neurons

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5
Q

sympathetic ganglia include?

A
  • cervical ganglia
    • superior cervical ganglion
    • middle cervical ganglion
    • inferior cervical ganglion
  • 10-12 thoracic ganglia
  • 4 lumbar ganglia
  • 4-5 sacral ganglia
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6
Q

Where do postganglionic sympathetic fibers course?

A
  • all spinal nerves
  • virtually all parts of body (except avascular tissue)
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7
Q

dental pulp receives postganglionic sympathetic fibers from?

A

superior cervical ganglion

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8
Q

What fiber types in dental pulp and what do they do?

A
  • GVE to control vascular tone
  • GSA transmit pain
  • GVA send info on vascular tone to CNS
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9
Q

superior cervical ganglion receives preganglionic sympathetic fibers from what vertebral levels?

Where do they go after?

A

T1-T3 (also T4, T5)

than ascend through sympathetic chain

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10
Q

superior cervical ganglion sends post sympathetic fibers to: (5)

A
  1. internal corotid plexus (to cranial cavity w/ cranial nerves)
  2. external corotid plexus (to face)
  3. corotid body/sinus
  4. C1-C4 spinal nerves
  5. cardiac plexus via cardiopulmonary splanchnic nerve
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11
Q

what is the smallest cervical ganglion?

A

middle cervical

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12
Q

middle cervical ganglion gets preganglionic sympathetic fibers from what vertebral levels?

A

T1-T3 (also T4, T5)

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13
Q

middle cervical ganglion postganglionic sympathetic fibers go to? (2)

A
  1. C5, C6 spinal nerves
  2. cardiac plexus via cardiopulmonary splanchnic nerves
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14
Q

what is the stellate ganglion?

A

inferior cervical ganglion when fused to 1st thoracic

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15
Q

inferior cervical ganglion receives preganglionic sympathetic fibers from what vertebral level?

A

T1-T3, T4, T5

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16
Q

inferiro cervical ganglion postganglionic sypmathetic fibers go to?

A
  1. C7, C8 spinal nerves
  2. cardiac plexus via cardiopulmonary splanchnic nerves
17
Q

upper thoracic ganglia receives preganglionic sympathetic fibers from what vertebral levels & where do they synapse?

A

T1-T5 (lateral horn)

synapse in thoracic paravertebral ganglia at same level

18
Q

upper thoracic ganglia postganglionic sympathetic fibers go where?

A

leave sympathetic chain and contribute to cardiac & pulmonary plexuses via cardiopulmonary splanchnic nerves and spinal nerves T1-T5

19
Q

mid-lower thoracic and lumber ganglia preganglionic sympathetic fibers synapse where?

A
  • in thoracic paravertebral ganglia at same level
  • through sympathetic chain w/o synapsing to prevertebral ganglia
20
Q

mid-lower thoracic and lumber ganglia postganglionic sympathetic fibers go where?

A

leave sympathetic chain and contribute to spinal nerves

21
Q

mid-lower thoracic and lumber ganglia preganglionic sympathetic fibers form what nerves if passing through sympathetic chain w/o synapsing?

A
  • abdominopelvic/splanchnic
    • greater splanchnic (T5-T9)
    • lesser splanchnic (T10-T11)
    • least splanchnic (T12)
    • lumbar splanchnic (L1-L2/3)
22
Q

prevertebral ganglia (which abdominopelvic splanchnic nerves travel to) include?

A
  • celiac
  • aorticorenal
  • superior mesenteric
  • inferor mesenteric
23
Q

abdominopelvic splanchnic nerve postganglionic sympathetic fibers go to (4)?

A

organs

celiac to foregut

superior mesenteric to midgut

aorticorenal to kidney

24
Q

Horner syndrome

A
  • results from interruption in cervical sympathetic chain
  • causes absence of sympathetically stimulated functions on ipsilateral side of head
    • pupil constriction
    • ptosis (drooping upper eyelid)
    • redness of skin
    • anhydrosis (no sweating)
25
Q

soma of preganglionic parasympathetic fibers located?

A

in brainstem nuclei w/ CN III, VII, IX, X

(also in S2, S3, S4)

26
Q

soma of postganglionic parasympathetic fibers located?

A

ganglia close to target organ

27
Q
A

AS II - Test 2 (6 decks)

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