Functions of Middle Ear | Coventry University - Edubirdie

University:
Coventry University
Course:
B940 | Biomedical Science
Academic year:

2023
Views:

121

Pages:

3
Author:

Badusha S.

Function of Middle ices. why middle ear is necessary? Fees at Impeclence matching when sound from air liquid mediun (imnuean) malt of round is reflected/ clampened Empendence matching. Resistance Modching (resistance of liquid) also called amplificatio of scaund # ransformer action of Middle ear Functions as both Impedence matching and also pampening of sound by tafuclical Refli. impedance lepanda on a Ratias Areal ratio Temponto momen omy cossicles goat plave of stafus area 55 ma area g-2mm² • when the sound sraels from larger rufan cava (ic TM) to the small rurface area (FPS) the force of sound increases largerly at the small eurface are a (eg.: Nail bot bing hit on to the wall) preal ration 55mm =17 3.2mm Celer Rationa Log • Handle of malus is 1.3 times, langs tram long process cofa Incus * Thus olving ramimission of sound sncus. onales 1.3 times farter. the 29./ A big bay purring a small bay) 1.3 Tatal Transfomer ratio = Areal ratio x cover, ratio 17×1.3 - 22 phare difference diving Nomal ranemierion of round through im the sound reacher filt at the aval winder where compression Takes place after the I at the same time at the round window there is rere rarefraction Thus after the round traves. in offrorise direction there a at Share shift (r.e conifrenion Te round numdow & rarefraction at oval window) Then there is alway phare difference.

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