SLHS 305 Exam 3 with Questions and Correct Answers 2025.

SLHS 305 Exam 3 with Questions and
Correct Answers 2025



Transduction ,- ,CORRECT ,ANSWER-The ,change ,in ,sound ,energy ,from ,one ,form ,to
,another


Impedance ,mismatch ,in ,the ,ear ,- ,CORRECT ,ANSWER-30 ,dB ,SPL ,loss ,at ,the ,oval
,window


Function ,of ,the ,middle ,ear ,- ,CORRECT ,ANSWER-Equalizes ,pressure

Resting ,potential ,of ,the ,scala ,media ,- ,CORRECT ,ANSWER-+80 ,mv

Transduction ,stages ,(earliest-latest) ,- ,CORRECT ,ANSWER-1.
,Condensation/rarefaction ,of ,air ,molecules
2. ,In ,and ,out ,movement ,of ,the ,oval ,and ,round ,windows ,
3. ,Back ,and ,forth ,movements ,of ,stereocilia ,
4. ,Depolarization ,and ,hyperpolarization ,of ,hair ,cells ,
5. ,Phase ,locking

Best ,describe ,what ,happens ,when ,you ,stimulate ,the ,left ,ear ,with ,a ,loud ,enough
,sound ,to ,elicit ,the ,acoustic ,reflex ,- ,CORRECT ,ANSWER-The ,activity ,includes ,in ,8th
,nerve ,on ,the ,left ,ear ,and ,the ,7th ,nerve ,on ,both ,ears


Best ,overcomes ,the ,loss ,of ,energy ,due ,to ,air-fluid ,impedance ,mismatch ,- ,CORRECT
,ANSWER-Areal ,ratio ,advantage


Function ,of ,the ,outer ,ear ,- ,CORRECT ,ANSWER-Increasing ,sound ,pressure ,in ,the
,mid ,to ,high ,frequencies ,due ,to ,resonance


Best ,describes ,the ,basilar ,membrane ,- ,CORRECT ,ANSWER-Narrow ,and ,stiffer ,at
,the ,base ,than ,at ,the ,apex


Part ,of ,the ,hydromechanical ,stage ,of ,the ,transduction ,process ,- ,CORRECT
,ANSWER-Shearing ,of ,the ,stereocilia


What ,is ,similar ,to ,angular ,(rotational) ,acceleration? ,- ,CORRECT ,ANSWER-Turn ,head
,to ,the ,right

, Which ,distortion ,product ,is ,most ,often ,measured ,clinically? ,- ,CORRECT ,ANSWER-
2f1-f2

The ,frequency ,theory ,of ,hearing ,would ,best ,be ,described ,as...? ,- ,CORRECT
,ANSWER-Using ,phase-locking ,in ,the ,pattern ,of ,neural ,discharges ,below ,5000 ,Hz


The ,primary ,role ,of ,the ,outer ,hair ,cells ,- ,CORRECT ,ANSWER-Increase ,the
,displacement ,of ,the ,basilar ,membrane ,through ,their ,motility


VOR ,- ,CORRECT ,ANSWER-The ,vestibular ,pathway ,that ,allows ,one ,to ,maintain ,a
,clear ,visual ,image ,during ,head ,rotation


T/F ,Intensity ,coding ,can ,be ,explained ,by ,an ,increase ,in ,the ,discharge ,rate ,of ,neurons
,around ,CF ,- ,CORRECT ,ANSWER-False


T/F ,The ,saccule ,and ,utricle ,signal ,rotational ,(angular) ,head ,movements ,- ,CORRECT
,ANSWER-False


T/F ,A ,problem ,for ,the ,place ,theory ,is ,the ,"case ,of ,the ,missing ,fundamental" ,-
,CORRECT ,ANSWER-True


T/F ,The ,tip ,links ,of ,the ,stereocilia ,open ,ion ,channels ,when ,they ,bend ,away ,from ,the
,modiolus, ,which ,then ,allows ,K+ ,to ,enter ,the ,hair ,cell ,- ,CORRECT ,ANSWER-True


T/F ,The ,transfer ,function ,of ,the ,middle ,ear ,shows ,an ,increase ,in ,the ,sound ,pressure
,primarily ,in ,frequencies ,before ,3000 ,Hz ,- ,CORRECT ,ANSWER-True


Transduction ,process ,- ,CORRECT ,ANSWER-acoustic ,energy ,that ,enters ,the ,ear
,canal ,is ,converted ,to ,mechanical ,energy ,in ,the ,middle ,ear ,and ,then ,to
,hydromechanical ,energy ,in ,the ,fluid-filled ,inner ,ear


Impedance ,mismatch ,(air ,to ,fluid) ,- ,CORRECT ,ANSWER-situation ,in ,which ,two
,systems ,have ,different ,impedances ,so ,that ,there ,is ,an ,inefficient ,transfer ,of ,energy
e.g., ,vibrations ,in ,air ,are ,not ,efficiently ,transferred ,to ,fluid

Reciprocal ,(OW/RW) ,- ,CORRECT ,ANSWER-back ,and ,forth ,movements ,of ,the ,oval
,and ,round ,windows ,necessary ,for ,vibrations ,to ,occur ,in ,the ,incomprehensible ,fluid-
filled ,cochlea ,
an ,inward ,movement ,of ,the ,oval ,window ,corresponds ,to ,an ,outward ,movement ,of ,the
,round ,window ,and ,vice ,versa


Areal ,ratio ,advantage ,- ,CORRECT ,ANSWER-one ,of ,the ,middle ,ear ,mechanical
,amplification ,methods ,due ,to ,the ,larger ,size ,(area) ,of ,the ,tympanic ,membrane
,compared ,with ,the ,oval ,window ,
pressure ,at ,the ,oval ,window ,is ,about ,25 ,dB ,greater ,than ,pressure ,at ,the ,tympanic
,membrane