nervous system 2

nervous system 2 - sound doesnt stimulate twice. a. HC are...

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Neural Pathways: optical recorders. When activity = fluorescence. 1.) Hearing:sound = mechanical energy. Pressure wave a. Outer ear: mechanical funnel to move in pressure waves b. Middle ear: mechanical, tympanic membrane amplifies sound c. Inner ear c.i. Mechanical simuli from malleus incus and stapes transfer mechanical energy to oval window c.ii. This results in pressure wave in cochlea c.iii. In cochlea: hair cells that when moved, depolarized. Sodium and calcium channels b/c epsp. 2.) Sound waves: 3.) Cochlea: have entry way in oval window, and exit way through the tympanic canal so that
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Unformatted text preview: sound doesnt stimulate twice. a. HC are on the basilar membrane. b. Tictorial membrane on upper duct of basilar membrane. c. Tictorial membrane: the membranes in the middle. Structure is more rigid close to oval window = higher freueuncy., right side = less dense = stimulation for low frequency 4.) Pressure waves push on basilar membrane, and hair cells move when it touches tectorial membrane. So the first stimulus x`....
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This note was uploaded on 01/10/2012 for the course BIOLOGY bild 2 taught by Professor Schroeder during the Fall '09 term at UCSD.

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