Ear & Orbit

Question 1

tensor tympani muscle nerve supply

Answer 1

V3 (only motor part of trigeminal)

Question 2

malleus and incus derived from blank

Answer 2

1st arch

Question 3

stapes derived from this arch

Answer 3

2nd

Question 4

stapes nerve supply

Answer 4

facial (remember arch nerves)

Question 5

lesser superficial petrosal nerve goes to blank ganglion

Answer 5

otic

Question 6

ganglion for taste sensation from cn VII

Answer 6

geniculate ganglion

Question 7

bones of orbit

Answer 7

frontal, lacrimal, zygomatic, maxilla, ethmoid, sphenoid

Question 8

head on collision can cause a blank fracture where the floor of the orbit breaks into maxillary sinus

Answer 8

blowout fracture

Question 9

levator palpebrae superioris, superior rectus, inferior oblique, inferior rectus, medial rectus nerve supply

Answer 9

oculomotor

Question 10

V1 also carries blank fibers which dilate pupils

Answer 10

postganglionic sympathetic

Question 11

ganglion that is parasympathetic to pupils of oculomotor

Answer 11

ciliary

Question 12

supplies superior oblique m.

Answer 12

trochlear

Question 13

abducens supplies

Answer 13

lateral rectus

Question 14

branch to orbit

Answer 14

ophthalmic artery

Question 15

ophthalmic artery comes off blank

Answer 15

internal carotid

Question 16

facial vein and ophthalmic veins all go into the blank

Answer 16

cavernous sinus

Question 17

drooping eyelid

Answer 17

ptosis

Question 18

nerve supply to outer ear

Answer 18

V, VII, X