cranial nerves Flashcards
Olfactory - I
sensory
special sense smell
O: receptors in olfactory mucosa of nasal cavity
Foramen: cribriform plate
OPTIC - II
sensory
special sense vision
O: retina of eye
Foramen: optic canal
OCULOMOTOR - III
motor
superior/ inferior/ medial rectus; inferior oblique; levator palpebrae superioris
O: oculomotor and edinger westphal nuclei within midbrain
F: superior orbital fissure
TROCHLEAR - IV
Motor
superior oblique
O: trochlear nucleus within midbrain
F: superior orbital fissure
TRIGEMINAL - V
Opthalmic
Opthalmic: S = eye and forehead
O: trochlear nucleus within midbrain
F: superior orbital fissure
TRIGEMINAL - V
Maxillary
S = over maxilla, nasal mucosa & upper palate
F: foramen rotundum
TRIGEMINAL - V
Mandibular
S = mandible, lower lip / teeth / tongue & jaw; M= mastication
foramen ovale
ABDUCENS - VI
Motor
“abducts eye” = lateral rectus
O: Pontine nucleus in pons
F: superior orbital fissure
FACIAL - VII
Both S = taste anterior 2/3 tongue F: internal acoustic meatus M = facial expression F: stylomastoid foramen
VESTIBULOCOCHLEAR - VIII
sensory
Vestibular = special sense equilibrium / balance
O: Hair cells in vestibule of the inner ear
Cochlear = special sense hearing
O: cochlea of the inner
F: internal acoustic meatus
GLOSSOPHARYNGEAL - IX
both "glosso" = tongue "pharyng" = throat S = posterior 1/3 tongue/throat M= swallowing (1 muscle) jugular foramen
VAGUS - X
motor
S = external acoustic meatus & tympanic membrane,laryngopharynx & viscera(oesophagus, stomach, trachea, lungs
M= pharynx,larynx,oesophagus
jugar foramen
ACCESSORY - XI
motor
sternocleidomastoid & trapezius
jugular foramen
HYPOGLOSSAL - XII
motor
muscles of the tongue
hypoglossal canal
