Cranial Nerves Flashcards
Olfactory
CNI
Sensory- Smell
Optic
CNII
Sensory- Vision
Oculomotor
CNIII
Motor- most EOM movement, opening of eyelids
Parasympathetic- pupil constriction, lens shape
Trochlear
CNIV
Motor- Down and inward movement of eye
Trigeminal
CNV
Motor- muscles of mastication
Sensory- sensation of face and scalp, cornea, mucous membranes of mouth and nose
Abducens
CNVI
Motor- Lateral movement of the eye
Facial
CNVII
Motor- facial muscles, close eye, labial speech, close mouth
Sensory- taste (sweet, salty, sour, bitter) on anterior two thirds of tongue
Parasympathetic- saliva and tear secretion
Acoustic
CNVIII
Sensory- hearing and equilibrium
Glossopharyngeal
CNIX
Motor- pharynx (phonation and swallowing)
Sensory- taste on posterior 1/3 of tongue
Parasymphathetic- parotid gland and carotid reflex
Vagus
CNX
Motor- pharynx and larynx (talking and swallowing)
Sensory- general sensation from carotid body, carotid sinus, pharynx and viscera
Parasympathetic- carotid reflex
Spinal accessory
CNXI
Motor- movement of trapezius and sternomastoid
Hypoglossal
CNXII
Motor- movement of tongue
Olfactory AF
anosmia
optic nerve AF
Defect in or absent central vision Defect in peripheral vision, hemainopsia Absent light reflex Papilledema Optic atrophy Retinal lesions
oculomotor nerve AF
Dilated pupils, ptosis, eye turns out and slightly down
Failure to move eye up, in, down
Absent light reflex
trochlear nerve AF
Failure to turn eye down or out
trigeminal nerve AF
Absent touch and pain, paresthesias
No blink
Weakness of messier or temporal is muscles
abducens nerve AF
Failure to move laterally, diplopia on lateral gaze
facial nerve AF
Absent or asymmetric facial movement
Loss of taste
acoustic nerve AF
Decrease or loss of hearing
vagus nerve AF
Uvula deviates to side No gag reflex Hoarse or brassy Nasal twang Husky Dysphagia, fluids regurgitate
hypoglossal nerve AF
Deviates to side
Slowed rate of movement
paresis
weakness of muscles rather than paralysis
spinal nerve AF
Absent movement of sternomastoid or trapezius
