Auditory Mechanism Exam 1

Question 1

Sequential Processing is:

Answer 1

Information flowing from one level to the next

Question 2

Where is the peripheral auditory system located?

Answer 2

Temporal bone

Question 3

Nearer the front of the body

Answer 3

anterior

Question 4

At or near the tail, posterior part of the body

Answer 4

caudal

Question 5

Nearer to the midline

Answer 5

medial

Question 6

Further back, nearer the rear of the body

Answer 6

posterior

Question 7

On or toward the back

Answer 7

dorsal

Question 8

Near the front of the body- nose/mouth

Answer 8

rostral

Question 9

What is the main job of the outer ear?

Answer 9

Collects acoustic energy, directs it to the middle ear

Question 10

About how long is the External Auditory Meatus?

Answer 10

2.5-3 cm

Question 11

The External Auditory Meatus is typically S shaped. True or False

Answer 11

True

Question 12

Which frequency does the pinna work best around?

Answer 12

5000 Hz

Question 13

In addition to collecting sound, what is another main function of the Outer Ear?

Answer 13

Localization

Question 14

In which frequencies is the overall increase in the signal due to the functions of the outer ear?

Answer 14

3000-4000 Hz

Question 15

When sound hits the tympanic membrane it is converted from acoustic to what type of energy?

Answer 15

Mechanical

Question 16

Middle ear muscle, contracts in response to loud sounds

Answer 16

stapedius

Question 17

Area of the tympanic membrane that is more supportive, the membrane is stiffer here

Answer 17

pars tensa

Question 18

Normally closed, opens when swallowing or yawning, equalizes pressure

Answer 18

eustachian tube

Question 19

What is the ratio between the TM and the stapes footplate?

Answer 19

17:1

Question 20

What is the total advantage of the middle ear impedance matching system?

Answer 20

33 dB

Question 21

Name 4 portions of the Temporal bone

Answer 21

squamous, mastoid, petrous and tympanic portions

Question 22

Does the Basilar Membrane respond to high or low frequencies at its base?

Answer 22

High Frequencies

Question 23

How is frequency represented in the Traveling Wave?

Answer 23

The location of maximum displacement

Question 24

Cylinder Shaped, expand and contract

Answer 24

OHCs

Question 25

Forms the floor of the cochlear duct

Answer 25

basilar membrane

Question 26

Ovoid or flask shaped, stereocilia are U shaped

Answer 26

IHCs

Question 27

Which supporting cells support the Inner Hair Cells?

Answer 27

Phalangeal Cells