Click the brain for a vid and the Ear

(nothing to do with hearing- used with BALANCE) (sends electrical signals from cochlea to the BRAIN) AuditoryNerve Auditory Nerve Semicircular Canals Semicircular Canals - nothing to do with hearing ~ used for balance ROUND WINDOW (another membrane that allows fluid inside the cochlea to move) INNER EAR BRAIN COCHLEA snail shaped fluid-filled vibrates as sounds enter the ear. Special hair cells inside turn the vibrations into electrical signals OVAL WINDOW (a thin tissue/membrane ~ the stirrup is attached here) BALANCE

HAMMER= MALLEUS HAMMER=MALLEUS ANVIL-INCUS STIRRUP=STAPES OVAL WINDOW click Wile E. Coyote for a vid. EARDRUM ANVIL=INCUS STIRRUP = STAPES

OUTER EAR About an inch long Hair & Wax protect eardrum from dirt. EAR DRUM OUTER ear (Auricle + Ear Canal) EAR CANAL Outer ear: middle ear: THE EARDRUM thin membrane/tissue Sound waves hit the eardrum and cause it to VIBRATE separates the outer ear from the middle ear the hammer bone is attached to the back side of the eardrum hammer -> anvil -> stirrup = 3 smallest bones in the body

Visible part of the ear. Gathers and funnels sound waves into the ear canal OUTER ear EAR DRUM Auricle