Cranial nerves Flashcards
What are the 12 cranial nerves?
- olfactory
- optic
- oculomotor
- trochlear
- trigeminal
- abducens
- facial
- vestibulocochlear
- glossophayngeal
- vagus
- accessory
- hypoglossal
are sensory nuclei located more lateral or medial to motor nuclei in the brainstem?
lateral
What is the foramen of the olfactory nerve?
the cribiform plate
What is the function of the olfactory nerve?
smell
Where is the optic nerve located?
to optic chiasma, optic tract
what is the foramen of the olfactory nerve?
optic canal
what is function of the optic nerve?
vision
where is the oculomotor nerve located?
pontomesencephalic junction
what is the function of the oculomotor nerve?
extra ocular muscles 4 & 6
which foramen does the oculomotor nerve leave the brain?
the superior orbital fissure
which foramen does the trochlear leave the brain
the superior orbital fissure
what is the function of trochlear?
superior oblique muscle
what is the function of abducens?
LR6 - lateral rectus
which foramen does abducens leave the brain?
superior orbital fissure
which branch of the trigeminal nerve leaves the superior orbital fissure?
ophthalmic division - sensation from upper face
where does the maxillary division leave the brain?
foramen rotundum - sensation from middle face
where does the mandibular region leave the brainstem?
foramen ovale - sensation from lower face and muscles of mastication
what is the role of the facial nerve?
muscles of facial expression
anterior 2/3rds of tongues
parasympathetic to all glands
where does the facial nerve leave the brain?
internal acoustic meatus
what is the role of vestibular cochlear?
hearing and balance
where does vestibular cochlear leave the brain?
internal acoustic meatus
where does the vagus nerve leave the brain
jugular foramen
what is the role of vagus?
muscles of pharynx and larynx, taste from epiglottis and palate
where does accessory nerve leave the brain?
jugular foramen
what is role of accessory nerve?
motor to SCM and trapesius
where does hypoglossal leave the brain?
hypoglossal canal
what is role of hypoglossal?
motor to muscles of tongue
