Auditory Mechanism Exam 1 Flashcards Preview

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Flashcards in Auditory Mechanism Exam 1 Deck (27)
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1
Q

Sequential Processing is:

A

Information flowing from one level to the next

2
Q

Where is the peripheral auditory system located?

A

Temporal bone

3
Q

Nearer the front of the body

A

anterior

4
Q

At or near the tail, posterior part of the body

A

caudal

5
Q

Nearer to the midline

A

medial

6
Q

Further back, nearer the rear of the body

A

posterior

7
Q

On or toward the back

A

dorsal

8
Q

Near the front of the body- nose/mouth

A

rostral

9
Q

What is the main job of the outer ear?

A

Collects acoustic energy, directs it to the middle ear

10
Q

About how long is the External Auditory Meatus?

A

2.5-3 cm

11
Q

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

A

True

12
Q

Which frequency does the pinna work best around?

A

5000 Hz

13
Q

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

A

Localization

14
Q

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

A

3000-4000 Hz

15
Q

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

A

Mechanical

16
Q

Middle ear muscle, contracts in response to loud sounds

A

stapedius

17
Q

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

A

pars tensa

18
Q

Normally closed, opens when swallowing or yawning, equalizes pressure

A

eustachian tube

19
Q

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

A

17:1

20
Q

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

A

33 dB

21
Q

Name 4 portions of the Temporal bone

A

squamous, mastoid, petrous and tympanic portions

22
Q

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

A

High Frequencies

23
Q

How is frequency represented in the Traveling Wave?

A

The location of maximum displacement

24
Q

Cylinder Shaped, expand and contract

A

OHCs

25
Q

Forms the floor of the cochlear duct

A

basilar membrane

26
Q

Ovoid or flask shaped, stereocilia are U shaped

A

IHCs

27
Q

Which supporting cells support the Inner Hair Cells?

A

Phalangeal Cells