Ear

Question 1

fracture of this wall can cause CSF in the nose

preganglionic parasympathetics via the greater and lesser petrosal nerves

Answer 1

Roof of Middle Ear

Question 2

this wall of the middle ear contains tensor tympani m.

infection can compromise internal carotid a.

Answer 2

Anterior Wall of Middle Ear

Question 3

infection in this part of the middle ear can compromise internal jugular v.

Answer 3

Floor of Middle Ear

Question 4

this part of the middle ear contains tympanic membrane

chorda tympani n. is also found here

Answer 4

Lateral Wall of Middle Ear

Question 5

infection of this part of the middle ear can affect CN VIII in the inner ear

tympanic plexus found here

lesser petrosal n.

Answer 5

Medial Wall of Middle Ear

Question 6

infection in this part of the middle ear can compromise stapedius m. and facial n.

infection can also go through mastoid air cells here into sigmoid sinus

Answer 6

Posterior Wall of Middle Ear

Question 7

injury to these two parts of the middle ear can cause hyperacusis

Answer 7

Anterior and Posterior Wall

Question 8

a tumor that is suppressing the internal acoustic meatus would have what sx’s

Answer 8

lack of facial expressions (CN VII) and poor balance and hearing (CN VIII)

Question 9

soft tissue covering cartilage of ear

Answer 9

auricle

Question 10

inflammation of tissue covering ear cartilage

Answer 10

perichondritis

Question 11

inflammation of ear cartilage

Answer 11

chondritis

Question 12

4 nerves that provide sensory info. to cartilage of ear

Answer 12

Great Auricular n.
Lesser Occipital n.
Alderman’s n.
Auriculotemporal n.

Question 13

otitis externus

Answer 13

swimmer’s ear infection

Question 14

nerve and muscle that affect tympanic membrane

Answer 14

chorda tympani n.

stapedius m.

Question 15

site of tympanic membrane to put drainage tube

Answer 15

II

Question 16

connects middle ear to nasopharynx

Answer 16

Eustachian/Auditory Tube/Pharyngotympanic Tube

Question 17

Otitis Medius

Answer 17

middle ear infection

Question 18

stapes sits in what window of middle ear

Answer 18

oval

Question 19

represents cochlea in inner ear

Answer 19

promontory

Question 20

what part of temporal bone is associated with middle and inner ear

Answer 20

petrous part

Question 21

3 parts of bony labyrinth and what are they filled with

Answer 21

semicircular canals, vestibule, and cochlea

filled with perilymph

Question 22

membranous labyrinth parts and what are they filled with

Answer 22

semicircular ducts, utricle and saccule, and cochlear ducts

filled with endolymph

Question 23

what connects inner ear to subarachnoid space

Answer 23

cochlear aqueduct

Question 24

disease w/ sx’s of vertigo, tinnitus, and hearing loss

cause: aging, too much endolymph

Answer 24

Meniere’s disease

Question 25

3 infections of inner ear

Answer 25

serous labyrinthitis
suppurative labyrinthitis
viral infections

Question 26

serous vs. suppurative labyrinthitis

Answer 26

serous= bacterial toxins

suppurative= bacterial organisms