IHS Chapter #1,2,3,4,5,6,7,8,9, & 10 Questions

Professionalism can be defined as practicing with __________ .

Select one:

C. work ethic

D. All the above

A. a high-performance standard

B. accountability

D

The legal aspects of professional practice are defined through

Select one:

A. membership in a professional society

B. ethical conduct

C. local and national laws and regulations

D. the FDA

C

Ethical conduct __________ .

Select one:

A. is the expectation that a practitioner will conduct himself/herself in a socially acceptable manner and in a way that is consistent with members of the professional organization

B. has the force of law

C. is defined by local and national laws and regulations

D. is dictated by the apprentice's trainer/sponsor

A

Accurate and precise clinical documentation is important to success and the professional status of a hearing instrument specialist.

Select one:

A. True

B. False

A

The acronym H-E-A-R can be used as a device to remember how to construct __________ in a logical and consistent manner.

Select one:

A. a purchase agreement

B. clinical notes

C. an aural rehabilitation plan

D. an amplification management program

B

Inter-professional collaboration leads to __________ .

Select one:

A. more referrals

B. greater status

C. certification

D. improved patient/client care

D

A code of ethics provides guiding principles for professional conduct and may be used to help you resolve potential conflicts of interest.

Select one:

A. True

B. False

A

Lifelong learning is another term for __________ .

elect one:

A. certification

B. continued professional development

C. adult education

D. licensure

B

The development of a professional library is __________ .

Select one:

A. a waste of time and space

B. a pursuit of true professionals

C. not necessary in the digital world

D. required by law

B

A pure tone is specified in __________ .

Select one:

A. decibels

B. acoustics

C. Hertz or cycles per second

D. sound pressure level

C

Human hearing extends over such a vast intensity range of __________ dynes/cm2 which is compressed into a range of __________ decibels.

Select one:

A. 0.0002 to 1000; 0 to 140

B. 0 to 140; 0.0002 to 1000

C. 0.0002 to 140; 0 to 1000

D. 0.02 to 100; 0 to 140

A

The difference in phase for sounds arriving simultaneously at both ears contributes to a listener's ability to localize a sound source.

Select one:

A. True

B. False

A

A shorter wavelength results in a ______.

Select one:

A. Lower frequency

B. Higher frequency

C. Same frequency

D. Quieter frequency

B

The natural tendency for a system to vibrate with greater amplitude at one frequency than at others when a driving force whose frequency is at or close to the natural frequency of the system is called _________ .

Select one:

A. resonance

B. oscillation

C. wavelength

D. phase

A

The reference for dB HL is __________ .

Select one:

A. 0.0002 dynes/cm2

B. audiometric zero

C. another audiometric value

D. 0 dB SPL

B

The reference for dB SPL is __________ .

Select one:

A. 0.0002 dynes/cm2

B. audiometric zero

C. another audiometric value

D. 0 dB SPL

A

The reference for dB SL is __________ .

Select one:

A. 0.0002 dynes/cm2

B. audiometric zero

C. threshold

D. 0 dB SPL

C

Boyle's Law states __________ .

Select one:

A. what goes up must come down

B. as the physical volume of a gas decreases, the pressure of the gas increases

C. that as an earmold fits deeper into the ear canal, the SPL generated by the hearing instrument in that ear canal will decrease

D. wavelength and frequency are inversely related

B

The perceptual match for intensity is __________ and the perceptual match for frequency is __________ .

Select one:

A. dB; Hz

B. pitch; loudness

C. loudness; pitch

D. timbre; psychoacoustics

C

The auditory system follows a power law which is a logarithmic scale. In a logarithmic scale, a 10 dB increase in intensity ________ the loudness over most of the audible range.

Select one:

A. triples

B. doubles

C. increases by 10 times

D. decreases by 10 times

B

The normal human ear can respond to a range of frequencies from about __________

Select one:

A. 20 to 20,000 Hz

B. 20 to 20,000 dB SPL

C. 0 to 140 Hz

D. 0.0002 to 140 Hz

A

The concept of critical bands and frequency resolution contribute to our ability to

Select one:

A. hear effectively in background noise

B. discriminate between two sounds that are very close in frequency

C. hear very soft sounds

D. A and B

D

Low and extremely high frequencies require more intensity to be just barely audible as compared to the middle range of frequencies.

Select one:

A. True

B. False

A

The hearing instrument specialist is legally and ethically obligated to practice infection control standards that are consistent with federal/national and local jurisdictional safety laws and/or guidelines.

Select one:

A. True

B. False

A

In the context of infection control "standard precautions" refers to:

Select one:

A. the prevention of the spread of disease from the practitioner to the patient

B. the prevention of the spread of disease from the patient to the practitioner

C. hand hygiene and sharps containers

D. a set of infection control practices designed to prevent the transmission of disease

D

"Work practice controls" are:

Select one:

A. the hours that the practice is open for business

B. the laws imposed on professional practice

C. a written policy that outlines specific procedures that must be performed to minimize the spread of disease

D. not applicable to the hearing instrument dispensing practice

C

At a minimum gloves must be worn when:

Select one:

A. accepting a hearing instrument from a patient/client

B. removing an ear impression

C. during routine otoscopy

D. A and B.

D

Cleaning, disinfecting, and sterilization differ as follows:

Select one:

A. cleaning does not kill germs; disinfecting kills germs; sterilization kills 100% of the germs plus endospores

B. cleaning kills germs; disinfecting kills endospores; sterilization removes dirt and grease

C. only cleaning and disinfecting are required by hearing aid specialists, sterilization is not used

D. cleaning removes gross contamination; disinfecting kills 100% of the germs plus endospores; sterilization kills germs

A

A family member brings another's hearing instrument for service and the aid is placed on the surface of the workbench. It is caked with debris, presumably cerumen, and needs extensive cleaning. Bits of material fall all over the workbench. After addressing the concerns about the hearing instrument:

Select one:

A. the next patient's/client's hearing instrument is serviced in the same spot

B. the touch surface is sterilized

C. the touch surface is cleaned and disinfected

D. lunch is served on the workbench

C

Cold sterilization involves:

Select one:

A. cleaning gross contamination

B. soaking critical instruments in an approved and appropriate chemical for 1 minute

C. soaking cleaned critical instruments in an approved and appropriate chemical for the number of hours specified

D. is not necessary in a hearing instrument fitting and dispensing practice

C

Examples of semi-critical instruments are:

Select one:

A. otoscope specula; reusable earmolds or eartips; cerumen removal instruments

B. disposable ear tips for insert earphones

C. personal protective equipment

D. touch surfaces

A

It is necessary to perform hand hygiene procedures immediately after glove removal.

Select one:

A. True

B. False

A

Hand hygiene refers to:

Select one:

A. washing hands before eating

B. washing hands with soap

C. the use of alcohol-based hand sanitizers

D. B and C

D

The fleshy part of the ear that protrudes from the side of the head is called the

Select one:

A. oracle

B. auricle or pinna

C. flap or pinna

D. external auditory canal

B

The average adult's ear canal is about ______ inch in length and about ______ inch in diameter.

Select one:

A. 2.54 and 0.7

B. 1/2 and 3/4

C. 1/4 and 3/8

D. 1 and 1/4

D

An important ear canal landmark for ear impressions is the:

Select one:

A. tympanic membrane

B. annulus

C. second bend

D. vagus nerve

C

The cone of light is:

Select one:

A. a reflection of the light from an otoscope on the tympanic membrane

B. pars connica

C. seen only in ears with infections

D. is known as Arnold's reflex

A

The external auditory canal's resonant frequency is:

Select one:

A. triggered by the vagus nerve

B. about 2700 Hz and varies slightly from person to person

C. is located at the isthmus

D. has no importance in hearing instrument fitting

B

The normal tympanic membrane has a typical appearance characterized as:

Select one:

A. round and gray

B. loosely stretched

C. having a tragus

D. pearly grayish and oval

D

The structure of the tympanic membrane is made up of:

Select one:

A. 4 layers

B. ceruminous tissue

C. an umbo

D. an isthmus and a second bend

A

Hearing instrument specialists can state the cause of a hearing loss.

Select one:

A. True

B. False

B

Abnormalities of the outer or middle ear can cause __________ hearing loss.

Select one:

A. sensory/neural

B. conductive

C. mixed

D. central

B

Abnormalities of the brain can cause __________ hearing loss.

Select one:

A. sensory/neural

B. conductive

C. mixed

D. central

D

Abnormalities of both the inner and outer/middle ear can cause __________ hearing loss.

Select one:

A. sensory/neural

B. conductive

C. mixed

D. central

C

Abnormalities of the inner ear can cause __________ hearing loss.

Select one:

A. sensory/neural

B. conductive

C. mixed

D. central

A

It is important to know whether the ear canal is clear before testing hearing because:

Select one:

A. impacted cerumen can cause hearing loss

B. excessive cerumen can prevent full view of the tympanic membrane

C. cerumen can always be safely removed before testing

D. A and B

D

Ear drainage of any kind requires medical referral.

Select one:

A. True

B. False

A

The ossicles are the smallest bones in the body.

Select one:

A. True

B. False

A

The Latin names of the ossicles are:

Select one:

A. hammer, anvil, stirrup

B. manubrium, inculus, stapedial

C. annulus, transducer, medial bone

D. malleus, incus, stapes

D

There is a transduction of energy as acoustical sound courses through the middle ear which is as follows:

Select one:

A. acoustical energy is changed into mechanical energy at the tympanic membrane and changed into hydraulic energy at the stapes footplate

B. the light reflex into mechanical energy at the tympanic membrane

C. acoustical energy is changed into mechanical energy at the tympanic membrane and changed into hydraulic energy at the round window

D. mechanical energy is converted to acoustical energy and then into hydraulic energy

A

The tensor tympani muscle contracts in response to loud sounds and is the physiology behind the acoustic reflex.

Select one:

A. True

B. False

B

The promontory is located on the medial wall of the middle ear. It represents the __________ turn of the cochlea.

Select one:

A. apical

B. annular

C. second

D. basal

D

The __________ tube connects the nasopharynx and the ______________ ear.

Select one:

A. Eustachian; middle

B. Eustachian; inner

C. Eustachian; outer

D. external ear canal; inner

A

The Eustachian tube:

Select one:

A. maintains air pressure and improves drainage

B. is of no importance to hearing

C. functions only in airplanes

D. contains the middle ear muscles

A

Otitis media is:

Select one:

A. an ear infection that may result from Eustachian tube dysfunction

B. an inner ear disorder that results in tinnitus

C. can be treated by a traumatic perforation

D. treated surgically with a Eustachian tube

A

Fluid in the middle ear is also called:

Select one:

A. fusion

B. effusion

C. an allergy

D. bubbles

B

Otosclerosis immobilizes the ossicles at the:

Select one:

A. incudostapedial joint

B. tympanic membrane

C. cholesteatoma

D. stapes footplate

D

Ossicular discontinuity may be caused by __________.

Select one:

A. head trauma

B. otitis media

C. otosclerosis

D. fixation

A

A cholesteatoma is a tumor that typically produces:

Select one:

A. fenestration

B. sensorineural hearing loss

C. stapedectomy

D. an odorous discharge

D

The process of hearing actually takes place in the brain.

Select one:

A. True

B. False

A

The structures of the inner ear are responsible for both hearing and balance.

Select one:

A. True

B. False

A

The cochlea is located with the __________ portion of the __________ bone. It coils in about __________ turns. Uncoiled it measures about __________ inch.

Select one:

A. osseous; frontal; 2; 1.5

B. petrous; temporal; 2½; 1

C. inner; temporal; 3; 2

D. petrous; occipital; 4; 1

B

The __________ turn of the cochlea is located nearest the oval window. The __________ turn is at the other end of the coil.

Select one:

A. apical; basal

B. membranous; bony

C. balance; hearing

D. basal; apical

D

The frequency range of human hearing is:

Select one:

A. 0 to 110 dB

B. 20 to 20,000 dB

C. 20 to 20,000 Hz

D. determined by the Place Theory of Hearing

C

The advantages of binaural hearing are:

Select one:

A. localization ability

B. the ability to focus on one signal over another

C. improved hearing in background noise

D. All of the above

D

There are three chambers within the inner ear that are called:

Select one:

A. scala vestibuli; scala media; scala tympani

B. bony cochlea; the coil; the membranous labyrinth

C. the outer ear; middle ear; inner ear

D. the organ of Corti; retrocochlear; binaural

A

The __________ membrane and __________ membrane separate the cochlea into three chambers.

Select one:

A. perilymph; endolymph

B. tectorial; Reissner's

C. basilar; Reissner's

D. cochlear; vestibular

C

The organ of Corti is:

Select one:

A. the sensory receptor for hearing

B. the sensory receptor for balance

C. a gelatinous structure

D. has only supporting cells

A

The hair cells activate the auditory nerve through __________ energy.

Select one:

A. mechanical

B. hydraulic

C. electrochemical

D. impulse

C

The Place Theory of Hearing is simply explained as __________ .

Select one:

A. sound is processed by the brain

B. binaural summation

C. binaural fusion

D. the basal turn of the cochlea responds to high frequencies and the apical turn of the cochlea responds to low frequencies

D

The fluid that circulates throughout the scala vestibuli and the scala tympani is __________ and the fluid that circulates throughout the scala media is __________ .

Select one:

A. blood; lymph

B. lymph; mucus

C. perilymph; endolymph

D. endolymph; perilymph

C

The oval window and the round window work together as an energy relief mechanism to accommodate the traveling wave throughout the cochlea during acoustic stimulation.

Select one:

A. True

B. False

A

The head shadow effect represents a reduction in intensity for speech of 6 dB and for the high frequencies of about 15 dB.

Select one:

A. True

B. False

A

The singular perception of two different signals presented to each ear simultaneously is:

Select one:

A. binaural summation

B. binaural fusion

C. sound localization

D. head shadow effect

B

The increase in loudness when both ears hear together is:

Select one:

A. binaural summation

B. binaural fusion

C. sound localization

D. head shadow effect

A