Chapter 13 - Ear (General/Terms)

Question 1

Function of the ear

Answer 1

Hear and sense of balance

Question 2

Trace the pathway of sound (8)

Answer 2

1. Auricle (pinna)
2. External auditory canal
3. Tympanic membrane
4. Ossicles (malleus, incus, stapes)
5. Oval window
6. Cochlea
7. Acoustic nerve (CN VIII) (cochlear branch)
8. Temporal lobe of brain

Question 3

Acoustic neuroma

Answer 3

Benign tumor within internal auditory canal; CN VIII

Question 4

Ceruminoma

Answer 4

Tumor of gland that secretes earwax (cerumen)

Question 5

Cholesteatoma

Answer 5

Cyst like mass compose of epith cells and cholesterol in the middle ear

Question 6

Meniere disease

Answer 6

Chronic disease of the inner ear; vertigo, tinnitus, aural fullness, fluctuating hearing loss

Question 7

Otitis external

Answer 7

Infection of outer ear

Question 8

Otitis media

Answer 8

Infection of middle ear

Question 9

Presbycusis

Answer 9

Hearing impairment in old age

Question 10

Tinnitus

Answer 10

Ringing in the ears

Question 11

Vertigo

Answer 11

Sense that either ones own body or the environment is revolving

Question 12

Nerve that innervates the ear

Answer 12

Vestibulococear

Question 13

3 bones of the inner ear

Answer 13

Malleus, incus, stapes