Hearing Anatomy
Landmarks of the Outer Ear
External Auditory Meatus
The Middle Ear
Inner ear
100
The ear is an energy ___________. It converts acoustic energy to electrochemical energy
Energy transducer
100
The _______ bifurcates superiorly into crus antihelices
antihelix
100
The EAM is also known as the __________ and it is ~2.5 long and 0.7 cm in diameter
ear canal
100
The Tympanic Membrane is a boundary between the _________ ear and the _____________ ear
outer and middle
100
The inner ear is housed in a complex, bony structure within the petrous portion of the temporal bone called the ________________
bony labyrinth
200
Why is it critical to have a solid understanding of the auditory mechanics?
- speech and language is primarily learned via the auditory system, appreciation of disease and conditions that can impact hearing, understanding the design and purpose of formal hearing tests
200
The space between crura antihelices is the _______________
triangular fossa
200
The EAM protects the ____________ with ______________
tympanic membrane, cerumen
200
the ______ is the most concave aspect of the TM where the TM attaches to the manubrium of the malleus
jumbo
200
The ______________ semicircular canal involves ________________ rotation
anterior and sagital
300
The outer is composed of what two basic components:
pinna (auricle) & external auditory meatus
300
The concha is divided into 2 parts which are:
cava and cymba
300
The primary role of the EAM is to:
conduct acoustic energy to the tympanic membrane
300
The ________ is the smallest ossicle and has a footplate that fits into the ____________ window
stapes, oval
300
The Scala media contains endolymph and houses the ______________
organ of court
400
What is the colloquial term for the pinna
the ear
400
The curled margin of the pinna that marks distal borders of the pinna
the helix
400
The walls in the EAM change from __________ to ________________
Cartilage to Bone
400
The _________ is a muscle that protects the TM when it contracts
tensor tympani
400
The scale tympani terminates at the __________ window
round
500
What is the primary role of the outer ear?
a collector of sound
500
The space between the helix and antihelix is known as the:
scaphoid fossa
500
The EAM extends from the inferior of the _____ to the ______________
Pinna to the Tympanic Membrane
500
The _________ protects the inner ear when it helps stiffen the ossicular chain
Stapedius
500
The basilar membrane separates the Scala _________ and the Scala ___________
media & tympani
M
e
n
u