Questions and Answers
3-4 million - --CORRECT ANSWER--What estimation of children in US are deaf
or hard of hearing?
36 million - --CORRECT ANSWER--What is the estimate of people in US who
are hearing impaired?
outer ear, middle ear and inner ear - --CORRECT ANSWER--The ear is divided
into 3 sections. What are they?
pinna, external auditory canal - --CORRECT ANSWER--What is the outer ear
comprised of?
2.5 - --CORRECT ANSWER--On average, how long is the external auditory
canal?
TM - --CORRECT ANSWER--Where does the external auditory canal end?
cerumen - --CORRECT ANSWER--The external auditory canal has special cells
that secrete what?
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, TM - --CORRECT ANSWER--The middle ear is an air cavity separated from the
outer ear by what?
ossicular chain - --CORRECT ANSWER--The 3 bones in the middle ear form
what?
nasopharynx - --CORRECT ANSWER--The eustachian tube connects the middle
ear to what?
malleus - --CORRECT ANSWER--What is the 1st and largest of the three bones?
to the malleus, - --CORRECT ANSWER--Because of the attachment, the
vibrations of the tympanic membrane are transmitted to what?
TM - --CORRECT ANSWER--One end of malleus is embedded where?
oval window - --CORRECT ANSWER--The stapes footplate is inserted into
what?
yes - --CORRECT ANSWER--Y or N Does the ossicular chain transmit sound
efficiently without distortion?
tensor tympani, stapedius - --CORRECT ANSWER--There are 2 small muscles in
the middle ear that dampen the vibrations of the tympanic membrane and the
ossicular chain. What are they?
CN V - --CORRECT ANSWER--The tensor tympani is innervated through what
CN?
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