Flashcards in Eye and Orbit Deck (62)
what nerve gives sensory to skin over parotid duct
auriculotemporal of V3
what nerve passes through foramen rotundum
what carries postgang psy fibers to parotid gland?
auriculotemporal of V3
what innervates occipitalis m.?
posterior auricular branch of facial nerve (VII)
which cranial nerves contain GVE fibers
III, VII, IX (otic ganglion) , X
do we have drgs for cranial nerves?
innervation path for parotid
CNIX exit jugular foramen, tympanic branch goes back up through the tympanic canaliculi to middle ear and form a plexus. part of those are sensory to the middle ear, but the ones we want go up through the roof of middle ear (tegman tympani) they cross the middle cranial fossa as the lesser petrosal nerve. it goes down through foramen ovale and synapse in otic ganglion
what bone is the origin of the levator anguli oris
what bone contains stylomastoid f.
which bone has the groove for lesser petrosal n.
what CN that innervate the face contain SVE fibers
CN V3 (muscles of mastication. nerve of first pharyngial arch), VII (muscles of facial expression. nerve of second pharyngial arch)
which blood vessel most often impinges on CN V to cause trigeminal neuralgia?
superior cerebellar a.
are we gonna study visual pathways?
nope. just anatomy of the eye, no retina
where do eye boogies get stuck?
medial angle of the eye in lacrimal caruncle and lacrimal lake. maybe semilunar conjunctival fold if its a big one .
what bones are in the medial angle of the orbit?
lacrimal bone (with lacrimal groove), orbital plate of ethmoid bone, tiny piece of palatine bone, orbital surface of maxilla
what nerves are intimately related to the orbit
V1, V2, III
what bone parts make the superior orbital fissure?
greater and lesser wings of sphenoid
what bone parts make the inferior orbital fissure?
greater wing of sphenoid and orbital surface of maxilla (which has a groove for V2)
what sinus lies on either side of the body of sphenoid
cavernous sinus (for blood)
what are some foramina that are totally within the sphenoid?
foramen rotundum, pterygoid canal, foramen ovale, foramen spinosum
how does the central artery of retina get to the eye?
it travels WITHIN the optic nerve
what does the tarsal plate do?
its like the skeleton of the upper and lower lid that attaches to the levator palpegrae superiorism,, superior tarsal m. (aka muellers muscle innervated by ANS)
what innervates levator palpebrae superioris m
superior branch of occulomotor (III)
what does the lacrimal gland wrap around?
tendon of levator palpebrae superioris
what walls off the anterior portion of the orbit from the outside world?
orbital septum (from periosteum of the bone). its on inferior and superior portions of the orbit
lacrimal nerve is from which cranial nerve
what is the conjunctival fornix?
where the conjunctiva from the eyelid and eyeball meet
how does a tear get to your nose?
punctiva to canaliculi
PSy of CN __ innervate the lacrimal gland. How?
VII. go to internal acoustic meatus thru geniculate ganglion (NO SYNAPSE). thru foramen for greater petrosal nerve. it meets up with deep petrosal nerve (postganglionic sy) to pterygopalatine ganglion. SYNAPSE HERE. up to V2 to zygomatic n. to lacrimal n to lacrimal gland