Missed Practice Test ?'s

Question 1

which os the following instruments/apparatus do national standards or uniform performance standards for calibration exist?

• pure tone audiometers
• otoacoustic emissions
• auditory brainstem response
• senturia apparatus

Answer 1

pure tone audiometers have established standards (ANSI) for their calibration.

senturia apparatus definition: forces air into one nostril while the other is clamped shut to test eustachian tube function.

Question 2

which of the following is most likely to be introduced deliberately by the examiner during an audiometric examination?

• a distorted tone
• switching transients
• a masking noise
• a distracting tone

Answer 2

a masking noise

• a distored tone is an error in the audiometer that should not exist
• ## switching transients are clicking or popping sounds resulting from suddenly turning on or off a tone

Question 3

One componenet required in the production of sound is a hearing mechanism to receive it. The other 3 necessary components include all fo the following expcet?

• vibration
• medium
• force
• velocity

Answer 3

velocity is not one of the required componeents for producing sound it is rather a characteristic of one of the components, the medium through which sound waves travel.

Question 4

the outer ear is classified as which kind of device?

• mechanical
• acoustic
• hydraulic
• biological

Answer 4

the outer ear is an acoustic device.

it is not mechanical bc it does not perform any movements to transmit sound. it is hydraulic bc it does not contain fluid. it is not biological bc it does not analyze sound energy and trasmit it to the nervous or brain.

Question 5

the inner ear is classified as ALL OF THE FOLLOWING types of devices EXCEPT?

Answer 5

auditory

the inner ear is mechanical, hydraulic and biological. trasmission of energy via the hair cells in mechanical. the inner ear is filled with fluid which is hydraulic. the inner ear transmits information to the CNS via the auditory nerve so it is biologic

Question 6

the middle ear is classified as which kind of device?

• mechanical
• hydraulic
• biological
• vagal

Answer 6

mechanical, the ossicles are set in motion by energy and mechanically transmit energy to the inner ear

Question 7

without the middle ear, if sound were to reach the inner ear, to the hearer it would be?

• virtually nonexistent
• so loud it causes nerve damage
• distorted in its frequencies
• impossible to interpret

Answer 7

virtually nonexistent

it is estimated 99% of the sound would be reflected back

Question 8

the relationship of Hz to sound waves to cycle per second equals?

Answer 8

1:1:1

Question 9

the human voice typically has a frequency range of?

Answer 9

80 Hz to 6000 Hz

Question 10

the frequency range of human hearing is roughly?

Answer 10

20 Hz to 20,000 Hz

Question 11

extended high frequency audiometry, when used for specialized purposes, is done at what frequencies?

Answer 11

9,000 to 16,000 Hz