NBC-HIS - National Board For Certification In Hearing Instrument Sciences
NBC-HIS - National Board for Certification in Hearing Instrument Sciences
Exam (elaborations)
NBC-HIS Study Guide
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Course
NBC-HIS - National Board for Certification in Hearing Instrument Sciences
Institution
NBC-HIS - National Board For Certification In Hearing Instrument Sciences
A/C Correct Answer-Refers to a process by which sound is conducted through the outer and middle ear
B/C Correct Answer-Refers to the evaluation of the inner ear function exclusive of the outer or middle ear involvement
ABR Correct Answer-auditory brainstem response
Transfer function or are...
NBC-HIS Study Guide
A/C Correct Answer-Refers to a process by which sound is conducted
through the outer and middle ear
B/C Correct Answer-Refers to the evaluation of the inner ear function
exclusive of the outer or middle ear involvement
ABR Correct Answer-auditory brainstem response
Transfer function or areal ratio Correct Answer-22:1 an increase of
27dB
Acoustic reflex Correct Answer-Involuntary response, contraction of
stapes, damper on system
stapedius and tensor tympani Correct Answer-Keeps ossicles Chain
taught, responds to vibrations from TM, protects cochlea from
dangerously loud sounds, acoustic reflex
Terms associated with Scalia media Correct Answer-Cochlear duct
Canal of the cochlea
Membranous labyrinth
Contains organ of corti
,What frequencies does the base of the cochlea contain Correct Answer-
Highs
What frequencies does the apex contain Correct Answer-Lows
place theory of hearing Correct Answer-different areas of the basilar
membrane respond to different frequencies, neurons fire at a rate
identical to stimulus below 1kHz
Volley theory of pitch perception Correct Answer-Stimulus beyond
1KHz are volleyed
What does the outer ear do Correct Answer-funnels sound toward the
inner ear
External Auditory Meatus Correct Answer-Self cleaning, 5cm long
portion of the outer ear
Vagus Nerve Correct Answer-Tenth cranial nerve
Tympanic Membrane Correct Answer-Comprised of 4 layers and creates
an air tight/water tight seal to the middle ear cavity
TM layers Correct Answer-comprised of 4 layers
Annular Ring Correct Answer-Holds TM in place
Pars Tensa Correct Answer-thick, taut, central-inferior section of
tympanic membrane
Pars flaccida Correct Answer-small, slack, superior section of tympanic
membrane
Quadrants of the Tm Correct Answer-anterior superior, anterior inferior,
posterior superior, posterior inferior
, Middle ear components and use Correct Answer-conduct sound energy
to the inner ear, holds the ossicular chain by the tensor tympani and
stapeius muscles
Incudostapedial junction Correct Answer-top of malleus articulates with
top of incus, bottom of incus meets stapes
Middle ear muscles and functions Correct Answer-Suspends the
ossicular chain, acoustic reflex and protects cochlea from dangerously
loud sounds
Eustachian Tube Correct Answer-connects the middle ear with the
nasopharynx and allows passage of air
mastoid process Correct Answer-round projection on the temporal bone
behind the ear
Semicircular Canals Correct Answer-three fluid-filled canals in the inner
ear responsible for our sense of balance
Vestibule Correct Answer-endolymph filled cavity attached to the
semicircular canals and the cochlea that is responsible for gravity and
acceleration
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