Cranial Nerves Flashcards
name the 12 cranial nerves
- Olfactory
- Optic
- Oculomotor
- Trochlear
- Trigeminal
- Abducens
- Facial
- Vestibulocochlear
- Glossopharyngeal
- Vagus
- Accessory
- Hypoglossal
function of olfactory nerve
smell
exit foramen of olfactory nerve
cribiform plate
what type of info does olfactory carry
sensory
where does olfactory nerve end
temporal lobe - primary olfactory cortex
where is the cribiform plate
ethmoid bone
describe the course of the olfactory nerve
olfactory epithelium in nasal cavity → olfactory bulb and tract → primary olfactory cortex
function of optic nerve
percieve light in the eye
what type of info travels in optic nerve
sensory
exit foramen of the optic nerve
optic canal
describe the course of the optic nerve
retina → optic nerve → optic chiasm → optic tract → lateral geniculate → optic radiations → visual cortex
functions of oculomotor nerve
eye movement
dilates pupil
focuses lens
what type of info is carried in the oculomotor nerve
motor and autonomic
exit foramen of oculomotor nerve
superior orbital fissure
describe the course of the oculomotor nerve
anterior midbrain → lateral wall of cavernous sinus → through common tendinous ring → branches into superior and inferior branches
what muscles of eye movement are innervated by the oculomotor nerve
levator palpebrae superioris
superior rectus
inferior oblique
inferior rectus
medial rectus
function of levator palpebrae superioris
raises eyelid
function of superior rectus
elevates the eye
function of inferior oblique
abducts eye
function of inferior rectus
adducts and depresses eye
function of lateral rectus
abducts eye
function of medial rectus
adducts eye
function superior oblique
abducts and depresses
function of sphincter muscle
dilates pupil
function of ciliary muscle
focuses pupil
function of trochlear nerve
movement of eye
superior oblique
what movement will someone with a trochlear nerve palsy not be able to do
look down and out
exit foramen of trochlear nerve
superior orbital fissure
describe course of trochlear nerve
posterior midbrain → lateral wall of cavernous sinus
is the trochlear nerve within or outwith th common tendinous ring
outwith