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Flashcards in Eye and Orbit Deck (62)
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1

what nerve gives sensory to skin over parotid duct

auriculotemporal of V3

2

what nerve passes through foramen rotundum

V2

3

what carries postgang psy fibers to parotid gland?

auriculotemporal of V3

4

what innervates occipitalis m.?

posterior auricular branch of facial nerve (VII)

5

which cranial nerves contain GVE fibers

III, VII, IX (otic ganglion) , X

6

do we have drgs for cranial nerves?

no

7

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

8

what bone is the origin of the levator anguli oris

maxilla

9

what bone contains stylomastoid f.

temporal

10

which bone has the groove for lesser petrosal n.

temporal

11

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)

12

which blood vessel most often impinges on CN V to cause trigeminal neuralgia?

superior cerebellar a.

13

are we gonna study visual pathways?

nope. just anatomy of the eye, no retina

14

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 .

15

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

16

what nerves are intimately related to the orbit

V1, V2, III

17

what bone parts make the superior orbital fissure?

greater and lesser wings of sphenoid

18

what bone parts make the inferior orbital fissure?

greater wing of sphenoid and orbital surface of maxilla (which has a groove for V2)

19

what sinus lies on either side of the body of sphenoid

cavernous sinus (for blood)

20

what are some foramina that are totally within the sphenoid?

foramen rotundum, pterygoid canal, foramen ovale, foramen spinosum

21

how does the central artery of retina get to the eye?

it travels WITHIN the optic nerve

22

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)

23

what innervates levator palpebrae superioris m

superior branch of occulomotor (III)

24

what does the lacrimal gland wrap around?

tendon of levator palpebrae superioris

25

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

26

lacrimal nerve is from which cranial nerve

V1,

27

what is the conjunctival fornix?

where the conjunctiva from the eyelid and eyeball meet

28

how does a tear get to your nose?

punctiva to canaliculi

29

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

30

what are the three parts of the globe?

sclera, choroid, and neuronal layer (retina, which we don't care about yet)