Across 1    amplifies sound; does not restore hearing (7,3) 4    Structure on the basilar membrane composed of hair cells & dendrites of auditory nerve fibers. (5,2,5) 5    (_______) or nerve damage to middle ear is referred to ENT specialist (4) 8    Fluid-filled passage that extends from the round window at the base of the cochlea to the helicotrema at the apex. (8,5) 10    Cells that support the stereocilia that transduce mechanical movement into neural activity sent to the brain stem; hair cells also receive inputs from the brain. (4,5) 12    Spiral structure of the inner ear containing the organ of Corti. (7) 13    Infection of the ear canal that causes it to swell (6,7) 17    Third ossicle; connected to the incus on one end, the stapes presses against the oval window of the cochlea on the other end. (6) 18    The canal that conducts sound vibrations from the pinna to the tympanic membrane & prevents damage to the tympanic membrane. (3,5) 19    The first ossicle; the malleus receives vibration from the tympanic membrane & is attached to the incus. (7)

Down 2    Reflex that protects the ear from intense sounds, via contraction of the stapedius & tensor tympani muscles. (8,6) 3    A midbrain nucleus in the auditory pathway. (8,10) 6    External sound-gathering portion of ear, consist of pinna & ear canal. (5,3) 7    Plate of fibers that forms the base of the cochlear partition & separates the middle & tympanic canals. (7,8) 9    Region of cortex lateral & adjacent to the belt area where neurons respond to more complex characteristics of sounds, as well as to input from other senses. (8,4) 11    Early brain stem region in the auditory pathway where inputs from both ears converge. (8,5) 14    (___ ___) infections are usually be treated with eardrops (3,5) 15    The middle ossicle; the connection between malleus & stapes. (5) 16    Outer, funnel-like part of the ear. (6)