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Head and Neck Anatomy Practice Questions > Eye and Orbit > Flashcards

Eye and Orbit Flashcards

1
Q

what nerve gives sensory to skin over parotid duct

A

auriculotemporal of V3

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2
Q

what nerve passes through foramen rotundum

A

V2

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3
Q

what carries postgang psy fibers to parotid gland?

A

auriculotemporal of V3

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4
Q

what innervates occipitalis m.?

A

posterior auricular branch of facial nerve (VII)

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5
Q

which cranial nerves contain GVE fibers

A

III, VII, IX (otic ganglion) , X

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6
Q

do we have drgs for cranial nerves?

A

no

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7
Q

innervation path for parotid

A

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

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8
Q

what bone is the origin of the levator anguli oris

A

maxilla

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9
Q

what bone contains stylomastoid f.

A

temporal

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10
Q

which bone has the groove for lesser petrosal n.

A

temporal

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11
Q

what CN that innervate the face contain SVE fibers

A

CN V3 (muscles of mastication. nerve of first pharyngial arch), VII (muscles of facial expression. nerve of second pharyngial arch)

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12
Q

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

A

superior cerebellar a.

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13
Q

are we gonna study visual pathways?

A

nope. just anatomy of the eye, no retina

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14
Q

where do eye boogies get stuck?

A

medial angle of the eye in lacrimal caruncle and lacrimal lake. maybe semilunar conjunctival fold if its a big one .

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15
Q

what bones are in the medial angle of the orbit?

A

lacrimal bone (with lacrimal groove), orbital plate of ethmoid bone, tiny piece of palatine bone, orbital surface of maxilla

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16
Q

what nerves are intimately related to the orbit

A

V1, V2, III

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17
Q

what bone parts make the superior orbital fissure?

A

greater and lesser wings of sphenoid

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18
Q

what bone parts make the inferior orbital fissure?

A

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

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19
Q

what sinus lies on either side of the body of sphenoid

A

cavernous sinus (for blood)

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20
Q

what are some foramina that are totally within the sphenoid?

A

foramen rotundum, pterygoid canal, foramen ovale, foramen spinosum

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21
Q

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

A

it travels WITHIN the optic nerve

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22
Q

what does the tarsal plate do?

A

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)

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23
Q

what innervates levator palpebrae superioris m

A

superior branch of occulomotor (III)

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24
Q

what does the lacrimal gland wrap around?

A

tendon of levator palpebrae superioris

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25
Q

what walls off the anterior portion of the orbit from the outside world?

A

orbital septum (from periosteum of the bone). its on inferior and superior portions of the orbit

26
Q

lacrimal nerve is from which cranial nerve

A

V1,

27
Q

what is the conjunctival fornix?

A

where the conjunctiva from the eyelid and eyeball meet

28
Q

how does a tear get to your nose?

A

punctiva to canaliculi

29
Q

PSy of CN __ innervate the lacrimal gland. How?

A

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
Q

what are the three parts of the globe?

A

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

31
Q

what muscle changes the shape of the lens?

A

ciliary muscle via zonular fibers. it attaches to the lens CAPSULE, not the actual lens

32
Q

what two things related to the eye are from the CNS?

A

retina (from optic cup) and optic nerve (from optic stalk)

33
Q

what germ layer makes the lens?

A

ectoderm

34
Q

what germ layer does the rest of the eyeball come from

A

mesoderm

35
Q

t/f sclera and cornea are the same layer

A

true

36
Q

what layer has the ciliary process and iris?

A

choroid layer

37
Q

what attaches the lens to the back of the eye?

A

hyaloid canal

38
Q

dialator muscle is psy or sy control?

A

sy.

39
Q

what does the fascia of ocular muscles attach to?

A

check ligaments go to the bone of orbit, otherwise they attach to the sclera

40
Q

what is the space between the fascia of ocular muscles and the fascial sheath of eyeball?

A

episcleral space

41
Q

____ mm. come from a common tendinous sheath behind the eye

A

rectus muscles

42
Q

what five nerves go through the common tendinous ring?

A

oculomotor sup. div. (III), nasociliary n, abducent (VI), oculomotor inf. div (III), optic nerve (II)

43
Q

when you have someone look at your finger, what nerves are you testing?

A

III, IV, VI

44
Q

what do short ciliary nerves do

A

go to the ciliary muscles

45
Q

what CN goes to lateral rectus?

A

abducens CN VI

46
Q

all the branches of V1 are ____

A

sensory

47
Q

nasociliary nerve is a branch of ___

A

opthalmic branch of V1

48
Q

trochlear nerve goes to ____

A

superior oblique m

49
Q

superior division of oculomotor innervates?

A

levator palpebrae superioris, superior rectus m

50
Q

what are post ganglionic sympatheic nerves going to do in the eye?

A

diallator pupillae, and intraocular blood vessels

51
Q

what are post synaptic parasympathetic fibers gonna do?

A

sphincter pupilllae

52
Q

short ciliary nerve contains what types of nerve fibers

A

postsynap. psymp, postsynap symp, and general sensory fibers

53
Q

arteries to eye are from?

A

opthalmic artery off the ICA

54
Q

veins from eye go?

A

to angular vein or to cavernous sinus or to pterygoid plexus. look at this picture because theres a lot

55
Q

infratrochlear n is the terminal branch of?

A

nasociliary n.

56
Q

external nasal n is terminal branch of?

A

anterior ethmoidal n.

57
Q

horners syndrom is?

A

ptosis of muellers muscle

58
Q

if you shine a light in the eye and neither eye responds, what is the problem?

A

the afferents are not getting the signal back

59
Q

ciliary ganglion lies on the __ side of the optic nerve

A

lateral

60
Q

if you get a baseball to the eye, what kind of fracture can you get?

A

blowout fracture

61
Q

do you replace a lens for glaucoma?

A

uhh. NO.

62
Q

when would one get conjunctival petichiae?

A

strangulation

Head and Neck Anatomy Practice Questions (13 decks)

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