Cd 443 Test 3 Study Guide With Complete Solution!!

CD 443 TEST 3 STUDY GUIDE WITH COMPLETE SOLUTION!!
stapedius, tensor tympani
Question :what are the middle ear muscles?
stapedius


Question :what is the primary muscle involved in acoustic reflex?
tensor tympani, stapedius


Question :when the ______ contracts, it pulls the malleus away from the TM.
when the ____ contracts, it pulls away from the oval window.
7th (facial)


Question :the stapedius is innervated by the ____ cranial nerve
5th (trigeminal)


Question :the tensor tympani is innervated by the ____ cranial nerve
stiffen the ossicular chain (changes transmission of sound through middle ear)


Question :what do the middle ear muscles (stapedius, tensor tympani) do?
low


Question :the middle ear muscles (tensor tympani, stapedius) primarily reduces
____ frequency transmission
inverse (as stiffness decreases, frequency increases)


Question :the relationship between stiffness and frequency is _____

,stapedius tendon


Question :#2
tensor tympani tendon


Question :#1
bilateral (reflex occurs in both ears in response to sound in either ear)


Question :the acoustic reflex is (bilateral/unilateral)
true


Question :t/f: the presence of absence of an acoustic reflex tells us the status of
several parts of the auditory system
reduces sounds below 1000 Hz


Question :what is the function of the acoustic reflex with regards to intensity?
smooths the frequency response in middle ear


Question :what is the function of the acoustic reflex with regards to sound
transmission?
auditory nerve, cochlear nucleus, SOC (superior olivary complex)


Question :what is the path on which nerve impulses are carried during the acoustic
reflex arc?
contralateral

, Question :crossed (measuring probe and stimulus are in OPPOSITE ears)
ipsilateral


Question :uncrossed (measuring probe and stimulus are in the SAME ear)
acoustic reflex arc


Question :
higher brain centers (not involved in reflex)


Question :the superior olivary complex of the acoustic reflex arc can send
information to the ipsilateral facial nerve, contralateral facial nerve, or where?
right contralateral


Question :stimulus is in R, probe is in L
left ipsilateral


Question :stimulus is in L, probe is in L
right ipsilateral


Question :stimulus is in R, probe is in R
left contralateral


Question :stimulus is in L, probe is in R
peak