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Biology (2,156)
BIO304H5 (88)
B Stewart (32)
Lecture

#19 Hearing

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Department
Biology
Course
BIO304H5
Professor
B Stewart
Semester
Fall

Description
HearingExternal ear to pathway to middle ear semicircular is for balancechochlea were hearing is occurrring windows are membrane covered openings chochlea fkuid filled cavityallow vibration from the ear to the chochlea hearing sound is mechanical vibrations of the air stapes is connected to the oval window vibrations are moved onto the oval windowcochleafluid filledEar vibrations dont go through water made up for by amplification 1 large eardrumb to oval window2 mechanical advantage mechanical movement against water is more effective that air vibrations on watercochlea cross secction membrane splitting fluid filled chambers hearing occurs across membrane paired chambers big red structure support cells and axonsorgan corti basic sensory strucutre that translate sound waves to electrical activities Support cells to the left basalar membrane and tectonal membran
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