Middle Ear Cavity
The footplate of the stapes occupies the _________ window.
Oval
The eustachian tube connects the middle ear cavity to the _________.
Nasopharynx
The membranous labyrinth is filled with _________ fluid.
Endolymph
The macula of the utricle responds to ________ stimulation.
Horizontal
The eighth cranial nerve is referred to as the ________ nerve or the auditory nerve.
Vestibulocochlear
The oval window opens into the scala __________.
Vestibuli
The eustachian tube permits drainage and _________________.
Pressure Equalization
The end organs of the inner ear are the _______ and saccule.
Utricle
The maculae contain ________, otolithic membrane and otoconia.
Hair cells
The acoustic stapedial reflex is elicited by sounds that are _____ decibels above the threshold for hearing.
80-90
The prominences of both the lateral semicircular canal and the facial nerve canal are located on the _____ wall of the middle ear cavity.
Medial
The _________ is attached to the tympanic membrane via the umbo.
Malleus
The end organ that the ___________________ communicate with is the utricle.
Semicircular Canals
________ of the hair cells in the crista ampullaris extend into the gelatinous mass called the cupola.
Stereocilia
The size ratio of the _________________ to the oval window results in an increase in acoustic pressure equal to 25 decibels.
Tympanic Membrane
The _______ aditus is a major landmark of the posterior wall of the middle ear cavity.
Tympanic
The two tympanic muscles that attach to the ossicles are the ________ and tensor tympani muscle.
Stapedius
The saccule and cochlear duct communicate via the _____________.
Ductus Reuniens
When ________ fluid pushes against the cupola, hair cell stereocilia bend and stimulate vestibular nerve fibers.
Vestibular
There is an acoustic pressure increase of __ decibels due to the movement of the tympanic membrane in segments rather than as a whole
6
The eustachian tube is located on the _______ wall of the middle ear cavity.
Anterior
The function of the acoustic stapedial reflex is _______ control and creating an improved signal-to-noise ratio.
Intensity
The ________ nerve, ________ nerve and internal branch of the basilar artery pass through the internal auditory meatus.
Auditory, Facial
The visual, vestibular and ____________ systems work together to maintain a human’s center of gravity.
Somatosensory
Two important muscles for eustachian tube dilation are the ______ and _____ veli palatini muscles.
Tensor and Levator