Chapter 16 and 17 Ear

Question 1

Deafness

Answer 1

Significant or total hearing loss caused by loud music, noises, and aging

Question 2

Ottis Media

Answer 2

Middle ear infection, and most common in children

Question 3

Tinnitus

Answer 3

constant ringing or roaring sound in the ear

Question 4

otosclerosis

Answer 4

Rare condition that causes hearing loss

Question 5

Vertigo Static Equllibrum

Answer 5

Maintain position of the head (not moving) in relation to gravity

Question 6

Frequency

Answer 6

The number of vibration a sound wave makes per second

Question 7

Dynamic equilibrum

Answer 7

Maintain position of the head in response to sudden movement

Question 8

Sensorineural deafness

Answer 8

Damage to either hair cells in cochlea or vestibulocochlear nerve

Question 9

Conduction deafness

Answer 9

Damage to external or middle ear

Question 10

Loudness

Answer 10

Louder sounds cause more vibrations, may also stimulate more hair cells

Question 11

Func. of ear

Answer 11

hearing and balance

Question 12

The outer ear and what structures make up each region

Answer 12

Pinna, auditory canal, and tympanic membrane (ear drum)

Question 13

The middle ear and what structures make up each region

Answer 13

Auditory tube, Ossicles: Malleus, Incus, Stapes, and oval window

Question 14

The inner ear and what structures make up each region

Answer 14

Bony Labyrinth, Vestible, semicurcular canal: Anterior, posterior, lateral, and cochlea, membraneous labyrinthium

Question 15

Pinna

Answer 15

Collect sound waves

Question 16

Cercuminous gland

Answer 16

Produce cerumen (ear wax)

Question 17

Auditory tube

Answer 17

Connect middle ear to throat

Question 18

Auditory ossicles

Answer 18

Transmit and magnify sound vibraitions to inner ear

Question 19

Vestibule

Answer 19

Balance semicircular canal

Question 20

Cochlea

Answer 20

Hearing

Question 21

Organ of Corit

Answer 21

Contains hair cells (receptors for hearing/sound)

Question 22

Steps involved in hearing pathway

Answer 22

1. Sound waves enter the pinna, travel through the auditory canal
2. Sound waves strike the tympanic membrane causing vibrations
3. Vibrating TM causes ossicles to vibrate
4. Vibrating stapes bone at oval windows generates movement of the cochlear fluid
5. Fluid movement stimulates Cilla and lined cochlea
6. Cilia sends electrical impulse along auditory nerve to brain for interceptions

Question 23

Sensorineural Deafness

Answer 23

Damage to either hair cells in cochlea or vestibule cochlear nerve

Question 24

Conduction deafness

Answer 24

Damage to external or middle ear