Cranial Nerves Flashcards
CNI name, origin, exit, function
Name - Olfactory
Origin -Olfactory Bulb
Exit - Cribiform Plate of ethmoid
Function - Smell
CNII
name, origin, exit, function
Name - Optic
Origin - LGN
Exit - Optic Canal
Function - Vision
CNIII
name, origin, exit, function
Name - Occulomotor
Origin - tegmentum
Exit - S.O.F
Function - LR6, SO4, 3
CNIV
name, origin, exit, function
Name - trochlear
Origin - tegmentum
Exit -S.O.F
Function - LR6, SO4, 3
CNV
name, origin, exit, function
Name - Trigeminal. This divides at Meckels Cave
Origin - Pons. This becomes V1 - Opthalmic, V2 - Maxillary, V3 - Mandibular
Exit - V1 - S.O.F, V2 - Foramen rotundum, V3 -foramen Ovale
Function - V1 - Sensory to forehead and scalp, V2 - sensory to nose and upper lip, V3 - Sensory and motor to jaw
CN VI
name, origin, exit, function
Name - Abducens
Origin - Pons
Exit - S.O.F
Function - LR6, SO4, 3
CNVII
name, origin, exit, function
Name - Facial
Origin - Pons
Exit - Internal Acoustic Meatus
Function - Facial movement. Sensation to anterior 2/3 tongue
CN VIII
name, origin, exit, function
Name - Vestibulocochlear
Origin - Pons
Exit - IAM
Function - hearing and balance
CNIX
name, origin, exit, function
Name - Glossopharyngeal
Origin - Medulla
Exit - Jugular foramen
Function - gag reflex, sensation poserior 1/3 tongue
CNX
name, origin, exit, function
Name - Vagus
Origin - Medulla
Exit - JF
Function - Sensory to organs and motor to larynx via recurrent laryngeal nerve to which damage causes hoarseness.
Damage to superior laryngeal causes a loss of pitch via external laryngeal and cricothyroid
CNXI
name, origin, exit, function
Name - Accessory
Origin - Medulla
Exit - JF
Function - SCM, trapezius
CNXII
name, origin, exit, function
Name - Hypoglossal
Origin - Medulla
Exit - Hypoglossal canal
Function - tongue movement. Damaged tounge pertrudes toward damaged side
What are the futher trigeminal divisions
V1 (frontal, suprarobital) V2, V3
What is the ciliary ganglion?
What is the cavernous sinus?
