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Hearing Mechanics
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Auditory Nerve
Carries electrical signals from the cochlea to the brain.
Ear Canal
Transmits sound from the pinna to the eardrum.
Spiral Ganglion
Contains the cell bodies of the auditory nerve, which transmit auditory information to the brain.
Eardrum
Vibrates in response to sound waves and transmits vibrations to the ossicles.
Corti's Tunnels
Passageways within the organ of Corti that play a role in the hydrodynamics of hearing.
Round Window
Allows fluid in the cochlea to move, which enables hearing.
Stapes
Transfers vibrations from the incus to the oval window of the cochlea.
Semicircular Canals
Responsible for sensing rotational movements and maintaining balance, not directly involved in hearing.
Pinna
Collects and funnels sound into the ear canal.
Tectorial Membrane
Contacts hairs of the sensory cells, playing a role in the mechanical stimulation of hair cells.
Malleus
Transfers vibrations from the eardrum to the incus.
Oval Window
Transmits vibrations from the stapes into the fluid of the cochlea.
Organ of Corti
Contains hair cells that act as sensory receptors for sound.
Hair Cells
Detect sound vibrations and translate them into electrical signals for the brain.
Incus
Transmits vibrations from the malleus to the stapes.
Acoustic Reflex
Protects the ear from damage due to loud sounds by tightening the muscles connected to the ossicles.
Eustachian Tube
Equalizes air pressure in the middle ear with atmospheric pressure.
Basilar Membrane
Vibrates in response to sound and supports the organ of Corti.
Vestibule
Contains otolith organs that help detect linear acceleration and maintain equilibrium.
Cochlea
Converts mechanical vibrations into electrical signals.
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