Intro to Cranial Nerves Flashcards
CN1
sensory
CN2
sensory
CN3
motor
CN4
motor
CN5
both
CN6
motor
CN7
both
CN8
sensory
CN9
both
CN10
both
CN11
motor
CN12
motor
CN I
olfactory nerve (smell)
anosmia
inability to smell
CN II
optic nerve (vision)
papilledema
swelling of optic disk due to high intracranial pressure
bitemporal hemianopsia
tunnel vision due to compression of the optic chiasm by a pituitary tumor
CN III
oculomotor nerve- eye movements (extraoccular muscle)
CN IV
trochlear nerve- extraoccular muscles
CN VI
abducent nerve- extraoccular muscles
muscles innervated by CN III somatic
superior rectus medial rectus inferior rectus inferior oblique levator palpebrae
muscles innervated by CN III visceral
sphincter of pupil
ciliary muscle
muscle innervated by CN IV
superior oblique
muscle innervated by CN VI
lateral rectus
ptosis and cause
drooping of upper eye lid
loss of elevator palpebrae muscle
what causes down and out pupil
lesion of CNIII- unopposed lateral rectus and superior oblique muscles