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external auditory meatus or canal
external passage for sounds collected from the pinna to the tympanum
structures in the middle of the ear that vibrate sound from the tympanic membrane to the inner ear
tympanic membrane (TM)
eardrum; drum-like structure that receives sound collected in the external auditory canal and amplifies it through the middle ear
inner ear, labyrinth
intricate, fluid-filled, intercommunicating bony and membraneous passages that function in hearing by relaying sound waves to auditory nerve fibers on a path to the brain for interpretation; also sense body movement and position to maintain balance and equilibrium (labyrinth=maze)
organ of Corti
structure located in the cochlea; contains receptors (hair cells) that receive vibrations and generate nerve impulses for hearing
middle part of the inner ear, in front of the semicircular canals and behind the cochlea, that contains the utricle and the saccule; functions to provide body balance and equilibrium
the larger of two sacs within the membraneous labyrinth of the vestibule in the inner ear (uter=leather bag)
the smaller of the two sacs within the membraneous labyrinth of the vestibule in the inner ear (sacculus=small bag)
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