Exam 2: Cranial Nerves Flashcards
CN I Olfactory n. axon function
sensory (smell)
CN I Olfactory n. CNS level
cerebrum
CN I Olfactory n. nuclei at CNS level
nasal mucosa (primary axons)
CN I Olfactory n. exit from skull
cribriform foramina of ethmoid bone
CN I Olfactory n. associated ganglion
olfactory bulb (secondary axons), temporal lobe
CN I Olfactory n. target structure
olfactory mucosa of nose
CN XII Hypoglossal n. axon functions
motor
CN XII Hypoglossal n. CNS level
medulla (medial aspect of olive)
CN XII Hypoglossal n - exit from skull
hypoglossal canal
CN XII Hypoglossal n. target structure
motor innervation of muscles: genioglossus hyoglossus styloglossus intrinsic mm of tongue
CN XI Accessory n. CNS level
spinal cord (C1-C5)
CN XI Accessory n. axon functions
motor
CN XI Accessory n. exit from skull
jugular foramen (via foramen magnum)
CN XI Accessory n. target structures
trapezius
sternocleidomastoid
what are the axon functions for trigeminal nerve?
sensory (V1, V2, V3) and branchial motor (V3 - arch 1)
which cranial nerves have a sensory branch for taste?
facial nerve (2 br) glossopharyngeal nerve (1 br) vagus nerve (1 br)
what do the sensory nerves for taste innervate? name for all 3 cranial nerves that have taste sensory axons
FACIAL N. — 2 branches: lingual nerve (for ant 2/3 tongue) and lesser palatine nerve (for palate)
GLOSSOPHARNYGEAL N. — 1 branch: lingual branch (for post 1/3 tongue)
VAGUS N. — 1 branch: internal laryngeal n. (for epiglottis)
what is the nerve name for V2
maxillary
nerve name for V3
mandibular
what is the condition called for when there is a lesion at the optic tract?
R/L homonymous hemianopsia
— same side of L and R visual fields are gone
what is the condition called when there is a lesion at the optic canal?
R/L monocular blindness
what branch does the ciliary ganglion suspend from (include CN # in your answer, not just name!)
V1 - suspends from short ciliary nerve of ophthalmic
what branch does the pterygopalatine ganglion suspend from?
V2 - maxillary nerve
what is the name and type of nerve that comes out of the palatovaginal canal?
name: pharyngeal nerve
type: sensory
CN V2
what is the name of the opening that posterior superior alveolar nerve comes out of?
pterygomaxillary fissure
CN V2
what is the name and type of nerve that comes out of the incisive fossa?
name: nasopalatine n
type: sensory
CN V2
what nerves come out of the sphenopalatine foramen?
nasopalatine n
posterior superior lateral (PSL) nasal n
posterior superior medial (PSM) nasal n
what is the opening that PSL and PSM nasal nerves come out of?
sphenopalatine foramen
CN V2
what opening is between the greater palatine f. and pterygomaxillary fissure?
sphenopalatine f.
what is the name of the cell body for branchial motor V3?
trigeminal motor nucleus
what is the name of the nerve that goes around the middle meningeal artery?
auriculotemporal nerve
where CN does the auricotemporal nerve originate from?
V3 - mandibular
what is the name of the opening that the chorda tympani runs through?
petrotympanic fissure
CN VII
what nerve runs along with the sensory taste branch for palate of the facial nerve?
lesser palatine n. V2
in what fossa is the hiatus for lesser petrosal and f. ovale located?
middle fossa
what are the five sensory (touch/proprioception) nerves of the glossopharyngeal n?
n to stylopharyngeal lingual *branch* tonsilar *branch* pharyngeal *branch* tympanic n
what are the four sensory (touch/proprioception) nerves of the vagus n?
auricular branch
sup —> external laryngeal n.
recurrent laryngeal n.
what do these auricular-related nerves originate/innervate
auriculotemporal nerve — V3 mandibular n
posterior auricular nerve — VII facial n
auricular branch — X vagus
great auricular nerve — cervical plexus (C2-C3, ventral)
