SCI227 Lecture Notes - Lecture 15: Eustachian Tube, Semicircular Canals, Oval Window
Document Summary
Unit a: hearing and equilibrium, the ear has two separate functions, hearing, equilibrium (balance) Is divided into three sections: the ear, outer, middle. It consists of: the tympanic membrane, ossicles, oval window, eustachian tube, a. tympanic membrane (eardrum) The inner ear: consists of the, cochlea, semicircular canals, vestibule, the vestibule and the semicircular canal are involved in balance!!, a. cochlea. Is shaped like a snail shell: converts the sound waves hitting the oval window to fluid waves, converts fluid waves to electrical impulses. Impulses are sent to the temporal lobe to be interpreted: the organ of corti. Is a chamber that contains two fluid filled sacs called the saccule and utricle. Is your head position (e. g. horizontal or vertical: detected by cilia in the saccule and utricle. It is interpreted by the cerebellum: saccule and utricle, contain cilia, cilia , are suspended in a gelatinous material, bend when the head is tilted.
