Eye and ear

Question 1

bones of orbit

Answer 1

Frontal bone
    Lacrimal bone
    Ethmoid bone 
    Zygomatic bone
    Maxillary bone
    Palatine bone 
    Sphenoid bone

Question 2

lacrimal gland located

Answer 2

laterally and superiorly

Question 3

lacrimal gland drains

Answer 3

medially; into the lacrimal canaliculi to the sac. Then it passes to the internal nasal meatus through the nasal lacrimal duct

Question 4

levator palpabrae superioris action

Answer 4

Elevates superior eyelid

Question 5

antagonist to levator palpabrae superioris

Answer 5

orbicularis oculi

Question 6

opthalmic branch of trigeminal form

Answer 6

supraorbital and supratrochlear

Question 7

maxillary branch of trigeminal forms

Answer 7

infraorbital

Question 8

Superior oblique runs through the _____ and attaches _______.

Answer 8

trochlea; posteriorly

Question 9

inferior oblique attaches

Answer 9

medially and anteriorly

Question 10

inferior oblique action

Answer 10

abducts and elevates eye

Question 11

ethmoid sinus location

Answer 11

medial to orbital

Question 12

medial rectus is _______ to the superior oblique

Answer 12

lateral

Question 13

superior rectis is ______ to the levator palpabrae superioris

Answer 13

inferior

Question 14

superior rectus is deep to

Answer 14

levator palpabrae superioris

Question 15

ciliary muscle

Answer 15

sensory, symp, parasymp (pupil size, etc)

Question 16

optic nerve formed by

Answer 16

axons from ganglion layer

Question 17

optic nerve is sensory for

Answer 17

sight

Question 18

oculomotor nerve superior division innervates

Answer 18

superior rectus, levator palpabrae superioris

Question 19

oculomotor nerve inferior division innervates

Answer 19

medial and inferior rectus, inferior oblique

Question 20

trochlear innervates

Answer 20

superior oblique

Question 21

abducens innervates

Answer 21

lateral rectus

Question 22

levator palpabrae superioris O&I

Answer 22

O: lesser wing of spenoid bone, sup and ant to optic canal
I: superior tarsus and skin of superior eyelid

Question 23

superior oblique o&i

Answer 23

O: body of sphenoid
I: Sclera of eye

Question 24

Tendon of superior oblique passes through ______, changes its direction, and inserts deep to _____.

Answer 24

a fibrous ring or trochlea; superior rectus muscle

Question 25

superior oblique action

Answer 25

abducts and drepresses eyeball

Question 26

Inferior oblique o&i

Answer 26

O: anterior part of floor of orbit
I: Sclera deep to lateral rectus muscle

Question 27

O&I for all rectus muscles

Answer 27

O: common tendinous ring
I: sclera just posterior to corneoscleral junction

Question 28

superior rectus

Answer 28

Elevates and adducts eyeball

Question 29

inferior rectus

Answer 29

Depresses and adducts eyeball

Question 30

medial rectus

Answer 30

adducts eyeball

Question 31

lateral rectus

Answer 31

abducts eyeball

Question 32

optic disc

Answer 32

back of eye where optic nerve comes out; blind spot

Question 33

macula

Answer 33

back of eye where light focuses; best visual accuity

Question 34

cochlea is for

Answer 34

hearing; located anteriorly

Question 35

semicircular canals (vestibular region)

Answer 35

balance, position sense

Question 36

3 ossicles (____,____,&______) attach to

Answer 36

maleus, incus, and stapes; tempanic membrane

Question 37

oval window action

Answer 37

vibrates perilymph (fluid)——> sound

Question 38

if tensor tympani tenses,

Answer 38

vibration of ossicles stops

Question 39

base of stapes occupies

Answer 39

oval window

Question 40

malleus is against

Answer 40

external acoustic meatus

Question 41

incus is located

Answer 41

between stapes and malleus

Question 42

labyrinth is a ______ structure that contains _____

Answer 42

membraneous; endolymph

Question 43

bony labyrinth is part of

Answer 43

temporal bone

Question 44

when basilar membrane vibrates and hair cells move

Answer 44

sound is produced

Question 45

round window

Answer 45

absorbs vibration