The Ossicular Chain
This portion of the superior wall tympanic cavity houses the large head of the malleus.
This wall of the tympanic cavity separates the tympanic cavity from the jugular fossa.
What is the inferior surface?
The Eustachian tube originates on this surface and terminates in the nasopharynx.
What is the anterior surface of the tympanic cavity?
The place where the manubrium of the malleus presses against the tympanic membrane is called this.
What is the umbo?
The larger relative size of the tympanic membrane compared to the oval window creates this kind of mechanism.
This portion of the incus links the bone to the head of the malleus.
What is the articular facet?
This surface separates the tympanic cavity from the internal carotid artery and houses the opening of the Eustachian tube.
What is the anterior surface?
The Eustachian tube contains these, whose function is to get rid of debris in the middle ear.
What are downward pointing cilia?
The pars flaccida is the part of the tympanic membrane that is not under tension and is this portion of the tympanic membrane.
What is the superior portion?
This term can be compared to trying to talk to someone underwater.
What is impedance?
This portion of the malleus can be seen pressing against the tympanic membrane.
What is the manubrium?
This surface has the stapedius muscle, the aditus to the antrum of the mastoid, and the branch of the facial nerve call the chorda tympani that passes from here to the anterior wall, just behind the ear drum.
What is the posterior surface?
The tensor veli palatini and this muscle are a part of the mechanism that opens the Eustachian tube.
What is the levator veli palatini?
The tympanic membrane forms this surface of the middle ear cavity.
What is the lateral surface?
Impedance in the middle ear causes this amount of hearing loss.
What is 30 dB?
This part of the ossicular chain covers the oval window and contains the fluid of the cochlea.
What is the footplate of the stapes?
This surface houses both the oval and round windows, as well as the canal for the facial nerve and the promontory.
What is the medial surface?
The Eustachian tube's function is to do this to the air pressure on both sides of the tympanic membrane.
What is equalize?
The "cone of light" visible on the tympanic membrane is actually light from this.
What is the instrument used to look into the ear?
This study measured the middle ear sound transfer function using 12 fresh temporal bones.
What is Aibara et al.?
This part of the incus connects to the head of the stapes.
What is the lenticular process?
The superior surface of the tympanic cavity is also this bone.
What is the Tegman tympani?
The function of the Eustachian tube is to do this to the air pressure on both sides of the tympanic membrane?
What is equalize?
This pars tensa portion of the tympanic membrane is under tension from this muscle.
What is the tensor tympani?
The malleus is 1.3 times the length of the incus, which causes the force applied on the incus is 1.3 times the pressure on the malleus, creating this kind of mechanism.
What is the lever mechanism?