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Ear Ch 13

structures of the ear

external structure located on both sides of the head external ear auricle (pinna)
short tube that ends at the tympanic membrane external auditory meatus (canal)
semitransparent membrane that separates the external auditory meatus and the middle ear cavity middle ear tympanic membrane (eardrum)
equalizes air pressure on both sides eustachian tube
bones of middle ear ossicles
bony spaces within the temporal bone of skull labyrinth (inner ear)
is snail-shaped and contains the organ of hearing cochlea
help the body maintain its sense of balance semicircular canals and vestibule
located in the skull bone behind the external auditory meatus mastoid bone and cells
Created by: Gadley