Middle Ear Flashcards
The stapedius muscle originates from the ______ nerve.
FACIAL
Binaural localization cues are created by interaural differences in the and of sounds between ears.
TIME, INTENSITY
The pyramidal eminence is located on the wall of the tympanum.
POSTERIOR WALL
The portion of the tympanum where the head of the malleus and incus can be found is call the:
EPITYMPANUM
Density of the radial and concentric fibers of the second layer of the TM is greatest at the:
MIDDLE AND OUTER BORDER
The tensor Tympani muscle originates from what cranial nerve?
TRIGEMINAL
The tensor tympani tendon enters the tympanum through the:
COCHLEARIFORM PROCESS
What are the three functions of the middle ear?
TRANSDUCE, PRESSURE EQUALIZER, INNER EAR PROTECTION
What is one of the limitations of the acoustic reflex?
LATENCY BEFORE MUSCLES CONTRACT
Because the umbo is displaced less than the rest of the tympanic membrane, an anatomic lever is created. This mechanism is called:
CATENARY LEVER
What are the three types of impedence? (Middle ear)
RESISTANCE, MASS, STIFFNESS
A fungal growth in the EAM is called a(n)…
OTOMYCOSIS
What three properties affect the level of sound pressure arriving at the entrance to the EAM?
FREQUENCY, HEAD SHADOW EFFECT, ANGLE OF INCIDENCE
The fossa incudis is located in the tympanum on the _________ wall.
POSTERIOR WALL
The stapes footplate is held in the oval window by a ring-shaped ligament called the ________ ligament.
ANNULAR
