Small, air-filled cavity in the temporal bone lined by epithelium middle ear (tympanic cavity) what is the middle ear composed of? tympanic membrane, auditory ossicles, oval window, and round window the middle ear is separated from the external ear by the _ _ and the inner ear by the bony partition which contain two membrane-covered openings: _ _ and _ _ tympanic membrane - oval window and round window air space in the posterior aspect of the middle ear that leads to the mastoid air cells tympanic antrum the auditory tube is opened during swallowing and yawning for what purpose? pressure equalization - necessary for normal hearing the auditory tube is a route for pathogens from the _ and _ to the middle ear nose and throat three tiny bones attached to the wall of the tympanic cavity which form bridge connecting the tympanic membrane to the inner ear auditory ossicles what are the three auditory ossicles? malleus, incus, stapes auditory ossicle attached to the tympanic membrane - vibrations of tm cause vibration malleus auditory ossicle caused to vibrate by malleus and passes vibration on to the stapes incus auditory ossicle held by annular ligaments to an opening in the wall of the tympanic cavity called the oval window stapes vibrations of the stapes act like a piston at the oval window which cause motion of the _ within the _ ear fluid - motion ossicles form a lever system that helps increase the force of the vibrations as they are passed from the _ _ to the _ _ (this vibration force is increased approx.

Anatomy of the ear practice test