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External Auditory Meatus
Directs sound waves
Pinna (auricle)
Collects sound waves
Tympanic Membrane
Provides a surface for a collection of sound
Auditory (Eustachian) Tube
Regulates pressure of middle ear
Malleus, Incus, and Stapes
Transmits vibration to perilymph
Tensor Tympani Muscle
Prevents extreme tympanic movement
Ampulla
Involved in rotational movement of the head
Cochlea
Transforms sounds into neural messages
Basilar Membrane
Motion bends hair cells
Cochlear Duct
Provides sense of hearing
Organ of Corti (hair cells)
Generates action potentials
Tectorial Membrane
Generates action potentials
Tympanic Duct
Carries sound waves
Vestibular Membrane
Isolates perilymph from endolymph
Vestibular Duct
Carries sound waves
Oval Window
Transmits pressure waves in perilymph
Round Window
Relieves pressure from cochlea
Semicircular Canal (bony labyrinth)
Contains Perilymph
Spiral Ganglion
Special sense neuron cell bodies for hearing
Vestibular Ganglion
Contain cell bodies
Vestibule
Contains Perilymph
Responds to changes in the position of the head with respect to gravity
Saccule
Head tilt
Utricle
Contains Endolymph
Head tilt
Cochlear Branch
Transmits hearing information
Vestibular Branch
Transmits balance information
Crista Ampullaris
Receptors for rational movement of head
Author
tgherasim
ID
314858
Card Set
Ear
Description
Functions of the Ear
Updated
2016-01-28T07:32:45Z
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