Where do I exit the skull?

laracrystalo's version from 2015-06-09 13:55


Question Answer
CN I olfactory --> cribiform
CN IIoptic --> optic canal
CN IIIoculomotor --> superior orbital fissure
CN IVtrochlear --> superior orbital fissure
CN V1trigeminal ophthalmic --> superior orbital fissure
CN V2trigeminal maxillary --> foramen rotundum
CN V3trigeminal mandibular --> foramen ovale
CN VIabducens --> superior orbital fissure
CN VIIfacial --> internal acoustic meatus
CN VIIIvestibulocochlear --> internal acoustic meatus
CN IXglossopharyngeal --> jugular foramen
CN Xvagus --> jugular foramen
CN XIaccessory --> jugular foramen
CN XIIhypoglossal --> hypoglossal canal


Question Answer
telencephalonCN I olfactory
diencephalonCN II optic
mesencephalonCN III, IV oculomotor and trochlear
metencephalonV, VI, VII, VIII
myelencephalonIX, X, XI, XII
face UMN lesionspares forehead and affects contralateral lower face
face LMN lesionipsilateral entire half of face
CN V motor lesionjaw deviates TOWARD lesion
CN X lesionuvula deviates AWAY from lesion
CN XI lesionweakness turning head to contralateral side of lesion (SCM), shoulder droop on side of lesion (traps)
CN XII lesionLMN tongue deviates TOWARD side of lesion (LICK YOUR WOUNDS)
corneal reflexV1 afferent, VII efferent (temporal obicularis oculi)
lacrimation reflexV1 afferent, VII efferent
jaw jerkV3 afferent, V3 efferent (masseter)
pupillary relfexII afferent, III efferent
gag reflexIX afferent, X efferent
smellCN I
sightCN II
pupil constrictionCN III sphincter pupillae EW nucleus
accommodationCN III
eyelid openingCN III (elevator palpebrae)
SO eye mvmtCN IV
masticationCN V
facial sensationCN V
anterior 2/3 of tongue sensationCN V3
LR eye mvmtCN VI
facial mvmntCN VII
anterior 2/3 of tongue tasteCN VII
lacrimationCN VII
salivationCN VII, parotid gland CN IX
eyelid closingCN VII orbicularis oculi
courses through parotid gland but does not innervateCN VII
stapedius muscle in earCN VII
hearing and balanceCN VIII
taste and sensation posterior 1/3 of tongueCN IX
swallowingCN IX, CN X
carotid body and sinus chemo and baroreceptor monitoringCN IX
stylopharyngeusCN IX
elevate pharynx, larynxCN IX
taste from epiglottic regionCN X
uvula movementCN X
talkingCN X
coughingCN X
monitor aortic arch and chemo/baro receptorsCN X
head turningCN XI
shoulder shrugCN XI SCM and traps
tongue movementCN XII
pure sensoryI, II, VIII
pure motorIII, IV, VI, XI, XII
both motor and sensoryV, VII, IX, X


Question Answer
midbrain CN nucleiIII, IV
pons CN nucleiV, VI, VII, VIII
medulla CN nucleiIX, X, XII
spinal cord CN nucleiXI
medial medulla arteryanterior spinal
lateral medulla arteryPICA
pure middle of medullaCN XII
medial pons arteryparamedian basilar branches
lateral pons arteryAICA
pure middle ponsCN VI
medial midbrain arteryposterior cerebral


Question Answer
skull capC2
turtleneck shirtC3
low collar shirtC4
nipple lineT4
xyphoid processT7
inguinal ligamentL1
achillesS1, S2
patellarL3, L4
bicepsC5, C6
tricepsC7, C8
cremasterL1, L2
anal wink reflexS3, S4

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