PRAXIS Audiology ST Study Guide Questions and Answers With
Verified Solutions Latest Updated Version
Terms in this set (437)
What estimation of children in US 3-4 million
are deaf or hard of hearing?
What is the estimate of people in 36 million
US who are hearing impaired?
The ear is divided into 3 sections. outer ear, middle ear, and inner ear
What are they?
What is the outer ear comprised of? auricle or pinna, and external auditory canal
it funnels sound to ear canal and helps localize sounds (this is most
Describe the auricle or pinna
visible part of ear and composed primarily of cartilage)
aka external auditory meatus, which goes from the pinna to the
Describe external auditory canal
tympanic membrane or ear drum
The external auditory canal is muscular tube, made mostly of cartilage
mostly made of what?
How is the external auditory canal like a S
shaped?
Because the external auditory canal the specialist who examines the ear canal must first pull the pinna
is up and back to insert the otoscope into the canal
shaped like a S, what must the
specialist who examine the ear
canal do to the
pinna?
On average, how long is the approximately 2.5 cm (1 inch) long and resonates sound that enters it.
external auditory canal?
, Where does the external auditory it ends at the tympanic membrane, or eardrum
canal end?
The external auditory canal has wax or cerumen
special cells that secrete what?
THe middle ear is an air cavity by the tympanic membrane
separated from the outer ear by
what?
ossicular chain
There are 3 small bones in the
middle ear form what?
connects the middle ear to the nasopharynx
The eustachian tube connects the
middle ear to what?
A ruptured or puctured tympanic scar tissue reduces the tympanic membrane's mobility
membrane may heal
spontaneously, but repeated
ruptures may cause scar tissue,
which does what?
elastic
thin
The tympanic membrane TM is cone-shaped
describe flexible & tough
vibrates in response to sound pressure
responds entirely to low frequencies
How does the TM respond to
frequencies? but only certain portions to high frequencies
it is suspended in the middle ear by
ligaments, it is composed of 3 tiny
What is the ossiculur chain
composed of? bones: the malleus, incus, and stapes
it is the malleus-Latin for hammer.
What is the 1st and largest of the
three bones?
Because of the attachment, the to the malleus
vibrations of the tympanic
membrane are transmitted
to what?
Verified Solutions Latest Updated Version
Terms in this set (437)
What estimation of children in US 3-4 million
are deaf or hard of hearing?
What is the estimate of people in 36 million
US who are hearing impaired?
The ear is divided into 3 sections. outer ear, middle ear, and inner ear
What are they?
What is the outer ear comprised of? auricle or pinna, and external auditory canal
it funnels sound to ear canal and helps localize sounds (this is most
Describe the auricle or pinna
visible part of ear and composed primarily of cartilage)
aka external auditory meatus, which goes from the pinna to the
Describe external auditory canal
tympanic membrane or ear drum
The external auditory canal is muscular tube, made mostly of cartilage
mostly made of what?
How is the external auditory canal like a S
shaped?
Because the external auditory canal the specialist who examines the ear canal must first pull the pinna
is up and back to insert the otoscope into the canal
shaped like a S, what must the
specialist who examine the ear
canal do to the
pinna?
On average, how long is the approximately 2.5 cm (1 inch) long and resonates sound that enters it.
external auditory canal?
, Where does the external auditory it ends at the tympanic membrane, or eardrum
canal end?
The external auditory canal has wax or cerumen
special cells that secrete what?
THe middle ear is an air cavity by the tympanic membrane
separated from the outer ear by
what?
ossicular chain
There are 3 small bones in the
middle ear form what?
connects the middle ear to the nasopharynx
The eustachian tube connects the
middle ear to what?
A ruptured or puctured tympanic scar tissue reduces the tympanic membrane's mobility
membrane may heal
spontaneously, but repeated
ruptures may cause scar tissue,
which does what?
elastic
thin
The tympanic membrane TM is cone-shaped
describe flexible & tough
vibrates in response to sound pressure
responds entirely to low frequencies
How does the TM respond to
frequencies? but only certain portions to high frequencies
it is suspended in the middle ear by
ligaments, it is composed of 3 tiny
What is the ossiculur chain
composed of? bones: the malleus, incus, and stapes
it is the malleus-Latin for hammer.
What is the 1st and largest of the
three bones?
Because of the attachment, the to the malleus
vibrations of the tympanic
membrane are transmitted
to what?
