Eye Anatomy

Front 1

Auricle

Back 1

The external ear flap.

Front 2

External acoustic meatus

Back 2

A canal with a cartilaginous wall leading inward to the skull.

Front 3

Tympanic membrane

Back 3

Lies at the base of the external meatus between the external and middle ear.

Front 4

Tympanic cavity

Back 4

The middle ear, lies within the bulla and opens inot the nasopharynx by the eustachian tube (auditory tube).

Front 5

Auditory tube

Back 5

Eustachian tube, appears as a slit in the lateral wall of the nasopharynx. (after revealing the tube, one will see it is partly cartilaginous and partly bony.

Front 6

Fenestra conchleae

Back 6

"Round window" can be seen through this hole through the dorsolateral portion of this plate, which passes between the two chanbers of the middle ear cavity.

Front 7

Malleus

Back 7

"Handle", inside of the tympanic membrane.

Front 8

Chorda tympani

Back 8

Tiny nerve that runs along it and leaves its tip in the ____, a branch of facial nerve going to the taste buds of the tongue and certain salvary glands.

Front 9

Incus

Back 9

has a body, a short process and a thin, long process. While the body connects with the malleus, the long process fits neatly with the head of the stapes to form a joint, serves to transmit vibrations from the malleus to the stapes

Front 10

Stapes

Back 10

This bone looks exactly like a miniature stirrup. It has a foot plate and an arch of thin bone with a small, button-like head on top. This is the smallest bone in the body.

Front 11

Fenestra Vestibruli

Back 11

"Oval windown" in which the stapes fits, lie dorsal to the fenestra concleae.

Front 12

Stapedius

Back 12

rises from the medial wall of the tympanic cavity to the fenestra conchleae and inserts on the stapes.

Front 13

Tensor tympani

Back 13

Arises from the medial wall rostral to the fenestra avestibuli and inserts on the malleus.