Autonomic NS Flashcards

1
Q

What are the main neurons of the ANS classified as and where are their ganglia located and are they mylinated

A

multipolar
outside brain and spinal cord
preganglionic-unmylinated
postganglionic-mylienated

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2
Q

innervation targets of somatic NS and Autonomic NS

A

Somatic- efferent voluntary motor n (skeletal striated m)

Autonomic- Involuntary motor n (smooth m, cardiac, glands)

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3
Q

what are the 3 divs of the ANS

A

Sympathetic
Parasympathetic
Enteric

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4
Q

where are the preganglionic sypathetic neurons found

A

T1-L3 spinal cord seg (lat horns)

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5
Q

where are the preganglionic parasympathetic neurons found

A
Cranial outflow (CN3,7,9,10)
Sacral outflow s2-4
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6
Q

what innervates the sup, mid and inf cervical sympathetic gangion

A

axons from t1-3

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7
Q

what innervats l4-co sympathetic ganglion

A

axons from l1-3

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8
Q

path of sympathetic axons out of spinal cord

A

start in lat horn exit out ant root and join trunk

exit as white communicating ramus (unmyl) and syapse on ganglai then exit as grey communicating ramus (mylin)

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9
Q

all 3 cervical ganglia send branches to this

A

cardiac plexus

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10
Q

what ganglia primarly inn the head and neck

A

cervical sympathetic ganglion

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11
Q

parasympathetic cranial nerves are

A

CN 3,7,9,10

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12
Q

what ganglia doe the parasympathetic nerves inn

A
cillary (eyes)
pterygopalantine (lacramal)
otic (parotid)
submandibular (sublingual, submandibular)
vagus (many visceral items)
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13
Q

what CNs inn the cillary, pterygopalantine, Otic and Submandibular ganglia

A

Cillary- CN3
Pterygopalantine- CN7
Otic- CN9
Submandibular- CN7

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14
Q

what is horners syndrome caused by

A

Blockage of int carotid sym nerve plexus in cavernous sinus ( causes sympathetic to get cut off so parasympathetic takes over )

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15
Q

what does horners syndrome present as

A

dialation
drooping eyelid
hypersecretion of lacrimal gland

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16
Q

response of sympathetic system

A
  1. increased cardiac output
  2. increased blood glu levels
  3. Activation of sweat glands
    4-vasoconstriction in organs (except mus)
17
Q

response of parasympathetic system

A
  1. increased secretion of saliva, mucus, dig enzymes
  2. increased glandular sec
  3. Activation of smooth mm