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SFM2 > CNS, the Orbit, and Major Plexi Anatomy > Flashcards

CNS, the Orbit, and Major Plexi Anatomy Flashcards

Week 6 - Week 7. Does not include specific nerves of plexi.

1
Q

function CN-1

A

olfactory

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2
Q

foramen CN-1

A

cribriform plate, go straight forward

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3
Q

how to test CN-1

A

identify common odors

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4
Q

function CN-II

A

optic

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5
Q

foramen CN-II

A

optic canal, forms an X

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6
Q

how to test CN-II

A

visual field, acuity, pupillary reflex

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7
Q

function CN-III

A

oculomotor, innervates most eye muscles: superior rectus, inferior rectus, medial rectus, inferior oblique, eyelid, pupil, lens

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8
Q

foramen CN-III

A

superior orbital fissure

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9
Q

how to test CN-III

A

pupil constriction, H pattern

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10
Q

function CN-IV

A

trochlear, innervates superior oblique

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11
Q

foramen CN-IV

A

superior orbital fissure

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12
Q

how to test CN-IV

A

H pattern

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13
Q

function CN-V

A

trigeminal (WHY IS THIS NOT 3 THAT IS SO ANNOYING); sensorimotor to face; ophthalmic

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14
Q

foramen CN-V

A 
opthalmic = superior orbital fissure
maxillary = foramen rotundum
mandibular = foramen ovale
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15
Q

how to test CN-V

A

touch, pain, eye touch, teeth contraction

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16
Q

function CN-VI

A

abductens; innervates lateral rectus; defect = lazy eye

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17
Q

foramen CN-VI

A

superior orbital fissure

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18
Q

how to test CN-VI

A

H pattern

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19
Q

function CN-VII

A

face motor, some sensory, taste, tears, spit

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20
Q

foramen CN-VII

A

internal acoustic meatus

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21
Q

how to test CN-VII

A

taste discrimination, facial weakness, eyelid reflex (to light touch)

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22
Q

function CN-VIII

A

vestibulocochlear; balance, eye movements (vestibular); hearing (cochlear)

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23
Q

foramen CN-VIII

A

internal acoustic meatus

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24
Q

how to test CN-VIII

A

hearing loss, vertigo

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25
Q

function CN-IX

A

glossopharyngeal, taste, sinus, nasal/oral pharynx

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26
Q

foramen CN-IX

A

jugular

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27
Q

how to test CN-IX

A

gag reflex

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28
Q

function CN-X

A

vagus, thoracic, abdominal, larynx, pharynx, epiglottis, esophagus

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29
Q

foramen CN-X

A

jugular

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30
Q

how to test CN-X

A

swallowing, speaking, gag reflex, say “ahh”

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31
Q

function CN-XI

A

sternocleidomastoid and trapezius motor

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32
Q

foramen CN-XI

A

jugular

33
Q

how to test CN-XI

A

weakness turning head or shrugging shoulders

34
Q

function CN-XII

A

tongue motor

35
Q

foramen CN-XII

A

hypoglossal canal

36
Q

how to test CN-XII

A

stick out tongue (deviation, atrophy, fasciculations)

37
Q

nerves _____ exit above respective vertebrae while remaining exit below vertebrae

A

C1-C7

38
Q

terminal end of spinal cord

A

conus medularis, which then continues into the filium terminae (which is pia mater), which then branches into roots called cauda equina (looks like horse tail)

39
Q

conus medularis is located _____ and continues into the _____

A

terminal end of spinal cord, filium terminae and then cauda equina

40
Q

where is lp done and why

A

lp is done in space between L3 and L4. By this point spinal cord has terminated but cauda equina (nerve roots, which, like all nerve routes, run through subarachnoid space, which contains csf) continues. below spinal cord so damage is unlikely.

41
Q

dorsal root contains ____ (motor/sensory) fibers while ventral root is _____

A

dorsal = sensory (SAD)
ventral = motor (VROOM VROOM)
both have both visceral and somatic

42
Q

roots split (motor) or coalesce (sensory) into ____

A

rootlets

43
Q

dorsal ramus usually innervates ____ while ventral usually innervates ____

A 
dorsal = back
ventral = rest of body
44
Q

thoracic nerves usually innervate _____ while cervical innervate ____ and lumbar innervate ____

A 
thoracic = intercostal muscles
cervical = cervical and brachial plexus
lumbar = lumbar and sacral plexus
45
Q

structures found in DRG

A

cell bodies of spinal nerves …

46
Q

dorsal ramus contains ___ fibers while ventral ramus contains ___

A

both contain both motor and sensory nerve fibers

47
Q

what two structures come together to form spinal nerve

A

dorsal and ventral roots

48
Q

what two structures emerge from spinal nerve

A

dorsal and ventral rami

49
Q

cervical, brachial, lumbar plexi are ____ (visceral/somatic)

A

somatic

50
Q

what fills epidural space

A

csf

51
Q

what fills subarachnoid space

A

csf

52
Q

what courses through optic canal?

A 
optic nerve (CN2)
ophthalmic artery
53
Q

what courses through superior orbital fissure?

A

CN3 through 6 (only V1 of trigeminal)

ophthalmic vein

54
Q

superior oblique innervation

A

CN4 trochlear

55
Q

superior rectus innervation

A

CN3 occulomotor

56
Q

medial rectus innervation

A

CN3 occulomotor

57
Q

lateral rectus innervation

A

CN6

58
Q

inferior rectus innervation

A

CN3 occulomotor

59
Q

inferior oblique innervation

A

CN3 occulomotor

60
Q

ophthalmic artery is a branch of ___, has a branch named ____ that courses through CN2, located near ___, and that’s important because…

A

located near medial side of orbit

61
Q

ophthalmic veins connect to ___

A

facial veins and veins inside skull

62
Q

type of fibers in cardiac plexus

A

visceral motor sympathetic
visceral motor parasympathetic
visceral sensory

63
Q

what nerves bring parasympathetic fibers to cardiac plexus and are they pre or post ganglionic?

A

CN10 vagus, preganglionic

64
Q

what nerves bring sympathetic fibers to cardiac plexus and are they pre or post ganglionic?

A

sympathetic chain, postganglionic

65
Q

type of fibers in pulmonary plexus

A

visceral motor sympathetic
visceral motor parasympathetic
visceral sensory

66
Q

what nerves bring parasympathetic fibers to pulmonary plexus and are they pre or post ganglionic?

A

CN10 vagus, preganglionic

67
Q

what nerves bring sympathetic fibers to pulmonary plexus and are they pre or post ganglionic?

A

sympathetic chain, postganglionic

68
Q

types of fibers in esophageal plexus

A

visceral motor sympathetic
visceral motor parasympathetic
visceral sensory

69
Q

what nerves bring parasympathetic fibers to esophageal plexus and are they pre or post ganglionic?

A

CN10 vagus, preganglionic

70
Q

what nerves bring sympathetic fibers to esophageal plexus and are they pre or post ganglionic?

A

sympathetic chain, postganglionic

71
Q

what ventral rami form the lumbar plexus?

A

L1-L4

72
Q

what is innervated by lumbar plexus

A

lower extremities

73
Q

types of fibers in lumbar plexus

A

somatic motor
somatic sensory
sympathetic visceral motor (to blood vessels)

74
Q

what ventral rami form the brachial plexus

A

C5-T1

75
Q

what is innervated by brachial plexus

A

upper extremities

76
Q

types of fibers in brachial plexus

A

somatic sensory
somatic motor
sympathetic visceral motor (to blood vessels)

77
Q

where are cell bodies of somatic motor neurons

A

ventral horn of grey matter in spinal cord

78
Q

where are cell bodies of somatic sensory neurons

A

dorsal root ganglia

79
Q

where are cell bodies of sympathetic motor neurons

A

sympathetic chain

SFM2 (11 decks)

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