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The Ear Vocab

7.2 Hearing

TermDefinition
anvil tiny bone within the middle ear that transmits sound from the hammer to the stirrup
auditory canal a short, tubelike structure that connects the outer ear to the eardrum
auricle the irregularly shaped outer portion of the ear
bony labyrinth winding tunnels located in the inner ear
ceruminous glands secretors of cerumen, or earwax; located in the auditory canal
cochlea a snail shaped structure in the inner ear that enables on to hear
cochlear duct the portion of the membranous labyrinth inside the cochlea
endolymph a thick fluid inside the membranous labyrinth
Eustachian tube a channel that connects the middle ear to the pharynx and serves to equalize pressure on either side of the typanic membrane
hammer tiny bone in the middle ear that transmits sound from the tympanic membrane (eardrum) to the anvil
membranous labyrinth membrane covered tubes inside the bony labyrinth
organ of Corti a spiral shaped ridge of epithelium in the cochlear duct lined with hair cells that serve as hearing receptors
ossicle the body's three smallest bones-the hammer, anvil, and stirrup;found in the middle ear
oval window a membrane covered opening that connects the middle ear to the inner ear
perilymph a clear fluid that fills the bony labyrinth
semicircular canals inner ear channels containing receptor hair cells that play an important role in balance
stirrup tiny bone in the middle ear that attaches to the anvil on one side and the oval window on the other
tympanic membrane a sheet of tissue at the end of the auditory canal; also known as the eardrum
vestibule a chamber in the inner ear that contains the three semicircular canals
vestibulocochlear nerve a cranial nerves compromising the cochlear nerve and the vestibular nerve
Created by: espindan1
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