SLHS 2203 Study Guide - Midterm Guide: Pars Flaccida Of Tympanic Membrane, Bony Labyrinth, Membranous Labyrinth
5 Mar 2019
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Document Summary
Know the components of the auditory system and be able to describe their function and be able to label them on an anatomical diagram. Be able to describe the anatomy and physiology of moving from sound pressure waves in the air to nerve impulses in the auditory nerve. Know the components of the outer ear, the middle ear, and the inner ear. Know functions of each part of the ear. Ossicles help increase sound pressure, size reduction from tympanic membrane to oval window increases force: tympanic membrane: oval, thin, semi-transparent membrane. Vibrations of the middle ear transmitted to oval window via stapes: eustachian tube: pathway to nasopharynx, assists in equalizing pressure between middle ear and atmosphere. Be able to explain how the cochlea responds to individual frequencies. You should know indicators of a healthy vs. impaired tympanic membrane: healthy: semi-transparent, clear cone of light, unhealthy: redness, swelling, perforated tympanic membrane, excessive cerumen.
