autonomic nervous system of head Flashcards

1
Q

autonomic is divided into:

A

parasympathetic

sympathetic

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2
Q

T1-L2 is the _____ NS

A

sympathetic

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3
Q

CN III, VII, IX, X and S2-24 are the ______ NS

A

parasympathetic (cranio saccral)

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4
Q

what are the autonomic plexuses?

A
cardiac
pulmonary
esophageal
celiac
mesenteric
hypogastric
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5
Q

the autonomic nervous system is a _____ neuron system

A

2 neuron

has presynaptic and postsynaptic and they synapse with autonomic ganglion

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6
Q

outflow name of parasympathetic

A

cranial sacral

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7
Q

outflow name of sympathetic

A

thoracolumnar

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8
Q

preganglionic cell body location of parasympathetic

A

brainstem nuclei and intermediolateral horn of S2-4

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9
Q

preganglionic cell body location of sympathetic

A

intermediolateral horn of T1-L2 only

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10
Q

preganlionic axon of parasympathetic

A

relatively long

uses 4 pairs of cranial nerves and 3 pairs of sacral spinal nerves

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11
Q

preganglionic axon of sympathetic

A

relatively short: white communicating rami
does not use cranial nerves
14 pairs of thoracolumbar nerves

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12
Q

postganglionic cell body of parasympathetic

A

mostly in target tissues including pelvic splanchnics

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13
Q

postganglionic cell body in symp

A

mostly sympathetic ganglia

splanchnics in prevert ganglia

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14
Q

postganglionic axons in parasymp

A

relatively short and contained within target tissue

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15
Q

postganglionic axons in sympathetic

A

relatively long due to distance from ganglia to target

greay communicating rami

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16
Q

primary target of parasymp

A

mostly viscera

never skin

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17
Q

primary target of symp

A

mostly skin

viscera secondary

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18
Q

function of parasymp

A
resting/digesting
decrease heart rate and blood pressure
increase GI tract activity
constrict pupils and bronchi
salivation
bladder contraction
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19
Q

function of sympathetic

A
fight/flight
increase HR and BP
decrease GI tract activity
dilate pupils 
inhibits saliva
dilates bronchi
gly to glu
adrenaline
inhibits bladder contraction
20
Q

all preganglionic cell bodies are ______ in sympathetic/parasymp

A

acetylcholine

21
Q

norepinephrine goes to _____ in _____ nervous system

A

smooth muscle
cardiac muscle
gland cells
sweat glands

22
Q

acetylcholine goes to _____ in _____ NS

A

smooth muscle
cardiac muscle
gland cells
in parasympathetic

23
Q

sympathetic nervous system targets ____

A

skin

24
Q

what neurons are in the sympathetic chain?

A

postganglionic sympathetic neurons

–ascend sympathetic chain and then go to target tissue

25
Q

cervical ganglia

A

superior: C1-C4
middle: C5 & C6
inferior: C7 & C8

26
Q

what is the distribution of sympathteic in head?

A

preganglionic–> superior cervical ganglia–> hitch a ride on the carotid–> cephalic arterial ramus–> carotid perarterial plexus–> blood vessels of visceral structures, blood vessels, sweat, arrector muscles of hair–> eyeball

27
Q

what is the sympathetic fiber distribution via the ICA?

A
  1. preganglionic ascend to superior cervical ganglia
  2. postganglionic go through internal carotid
  3. deep petrosal nerve (symp)
  4. nerve (vidian) of pterygoid canal
  5. maxillary nerve (V2) entering foramen rotundum
  6. pterygopalatine ganglion in pterygopalatine fossa
  7. maxillary sinus
28
Q

*outflow of CN III

A

nucleus: edinger-westphal (midbrain)
preganglionic axon: CN III
ganglion (postganglionic cell bodies): ciliary ganglion
postganglionic axon synapses: sphincter pupillae and ciliary body

29
Q

*outflow of CN VII

A

nucleus: lacrimal (pons) and superior salivatory
preganglionic axon: CN VII
ganglion (postganglionic cell bodies): pterygopalatine and submandibular
postganglionic axon synapses: lacrimal/nasal glands & submandibular/sublingual glands

30
Q

*outflow of CN IX

A

nucleus: inferior salivatory (medulla)
preganglionic axon: CN IX
ganglion (postganglionic cell bodies): otic
postganglionic axon synapses: parotid gland

31
Q

CN X outflow

A

nucleus: dorsal motor N of X and nucleus ambiguus (medulla)
preganglionic axon (nerve): CN X
ganglion (postganglionic cell bodies): terminal ganglia and cardiac ganglia
postganglionic axon synapses: gut to left colic flexure and lungs and cardiac muscle

32
Q

sacral outflow

A

nucleus: intermediolateral horn (spinal cord)
preganglionic axon: S2, 3, 4, pelvic splanchnics
ganglion (postganglionic cell bodies): pelvic plexus ganglia
postganglionic axon synapses: gut below left colic flexure and urogenital organs

33
Q

superior salivatory nucleus is in the ___

A

pons

34
Q

inferior salivatory nucleus is in the ____

A

medulla

35
Q

list the autonomic motor nuclei

A

edinger-westphal nucleus (III)
lacrimal nuclei
salivatory nuclei
dorsal motor nucleus of X

36
Q

CN III goes to —

A

ciliary ganglion which innervates the eyes

37
Q

CN VII goes to –

A

pterygopalatine ganglion and submandibular ganglion

which innervates lacrimal, nasal, palatine, and pharyngeal glands and submand and sublingual glands

38
Q

CN IX goes to –

A

otic ganglion which innervates the parotid

39
Q

what are the three things that happen to eye with the parasympathetic nervous system

A
  • thickens lens
  • constricts pupil
  • convergence of eyes
40
Q

parasympathetic path to eye

A
  1. accessory oculomotor (edinger-westphal) nucleus
  2. oculomotor nerve (III)
  3. ciliary ganglion
41
Q

parasympathetic path to submandibular and sublingual glands

A
  1. superior salivatory nucleus
  2. VII and pterygopalatine ganglion
  3. tympanic cavity
  4. chorda tympani
  5. lingual nerve
  6. submandibular ganglia (postganglionic)
  7. sublingual
42
Q

parasympathetic innervation of CN IX

A
  1. inferior salivatory nucleus
  2. glossopharyngeal nerve
  3. tympanic cavity and plexus
  4. lesser petrosal nerve
  5. otic ganglion
  6. auriculotemporal nerve
  7. parotid gland
43
Q

what happens with a CN III lesion? (parasymp)

A

loss of accommodation reflex (pupillary constriction and thickening of lens)

44
Q

what happens with a CN VII and IX lesion? (parasymp)

A

affects lacrimal and salivary secretions

45
Q

T1 lesion affects what only? (sympathetic)

A

eye only

46
Q

T1-T3 lesion in sympathetic division affects?

A

eye and head and neck

47
Q

sympathetic chain (superior cervical ganglia) lesion leads to?

A

horner’s syndrome