cranial nerves Flashcards
olfactory function
smell
optic function
vision
oculomotor function
eye lid and ball movement
trochlear function
moves eye down; superior oblique (abduction, depression, intorsion)
ophthalmic function
cornea, lacrimal gland, mucosa, skin
maxillary function
upper oral cavity, skin
mandibular function
chewing, lower oral cavity
abducens function
lateral rectus; abducts eye
facial function
taste, tears, saliva, facial expressions
vestibulocochlear function
hearing, equilibrium
glossopharyngeal function
taste, carotid blood pressure
vagus function
taste, digestion, aortic blood pressure, slows heart rate
accessory function
sternocleidomastoid and trapezius; swallowing
hypoglossal function
tongue movements
oculomotor branches
superior ramus
inferior ramus
superior ramus of oculomotor
levator palpebrae superioris
superior rectus
inferior ramus of oculomotor
medial rectus
inferior rectus
inferior oblique
oculomotor ganglion
pre parasympathetics –> ciliary ganglion (CN V short ciliary)
trochlear branches
trochlear (sensory motor postsymp) innervates superior oblique
ophthalmic branches
ALL SENSORY/Postsymp (short ciliary, lacrimal have post para)
nasociliary (infratrochlear (anterior/posterior ethmoidal), short ciliary, long ciliary)
frontal (supratrochlear, supraorbital)
lacrimal
maxillary branches
ALL SENSORY/Postsymp/Postpara (no postpara at beginning) pharyngeal lesser palatine greater palatine nasal palatine medial posterior superior nasal lateral posterior superior nasal posterior superior alveolar middle superior alveolar anterior superior alveolar infraorbital zygomatic
mandibular branches
auricotemporal meningeal deep temporal masseteric lateral pterygoid medial pterygoid long buccal lingual inferior alveolar incisive mental nerve to mylohyoid (ant digastric)
abducens branches
goes straight to lateral rectus
facial branches
n to stapedius n to posterior digastric n to stylohyoid temporal zygomatic buccal marginal meningeal cervical chorda tympani lingual greater petrosal lesser palatine greater palatine @zygomatic --> lacrimal
glossopharyngeal branches
n to stylopharyngeus n to carotid lingual tonsilar pharyngeal tympanic lesser petrosal
vagus branches
auricular carotid pharyngeal superior laryngeal (int laryngeal, ext laryngeal) recurrent laryngeal vagal trunk
accessory branches
none but comes from C1-5
hypoglossal branches
none but (genioglossus, styloglossus, hyoglossus, intrinsic muscles of tongue)
