UPDATED Exam Questions and CORRECT
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?
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?
CN VII - CORRECT ANSWER - The stapedius muscle, the smallest muscle in the body,
is innervated by what CN?
stapedius - CORRECT ANSWER - The (BLANK) stiffens ossicular chain.
tensor tympani - CORRECT ANSWER - the (BLANK) muscle tenses the tympanic
membrane so its vibrations are reduced