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Outer Ear
Middle Ear
Inner Ear
Inner Ear Continued
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100
The visible part of the ear.
What is the Pinna?
100
Connects the middle ear to the nasopharynx.
What is the eustachian tube?
100
Which cochlear passage extends from the oval window to the helicotrema.
What is the scala vestibuli?
100
These ions move in and out of the hair cell when the 'trapdoor' opens.
What are sodium and potassium ions?
100
Baseline potential changes that do not vary once they occur.
What are DC potentials?
200

The attenuation and phase shifts provided by a filter.

What is a transfer function?
200
The region of the tympanic membrane that has the maximum concavity.
What is the umbo?
200
A membrane of varying thickness and width within the cochlea.
What is the basilar membrane?
200
Act as biological transducers that start the neural process of hearing.
What are inner hair cells.
200
DC potential that occurs only during acoustic stimulation.
What is a summating potential?
300
Boosts SPL in the frequency region of 2700Hz.
What is the external auditory canal?
300
This muscle connects to the stapes.
What is the stapedius muscle?
300
These structures of the inner ear are responsible for our sense of rotational movement.
What are the semicircular canals?
300
Changes in these structures length affect the coupling between the basilar membrane and tectorial membrane.
What are outer hair cells.
300
The fluid found within the cochlear sac.
What is endolymph?
400
Provides information regarding the amount of earwax (ceremun) in a patients ear canal.
What is otoscopy?
400
This structure of the middle ear is implanted into the oval window.
What is the stapes footplate?
400
Bound by reissner's membrane above and the masilar membrane below (and the stria vascularis on the side).
What is the cochlear sac or scala media?
400
This location along the basilar membrane is more narrow and stiff and responds best to high frequency sounds.
What is the base of the cochlea.
400
Thick layer of blood capillaries forming the outer wall of the scala media.
What is the stria vascularis?
500
Provides a major boost in SPL around 5000Hz.
What is the concha effect?
500
The difference in impedance between air and the fluids and tissues of the inner ear.
What is the impedance mismatch?
500
Cochlear proteins responsible for for maintaining a high sensitivity to vibration.
What are myosin and actin?
500
These two membranes within the organ of corti move in opposite directions to aid in the shearing of hair cells.
What are the basilar and tectorial membranes?
500
Cochlear potential that measures the displacement of the basilar membrane.
What is the cochlear microphonic?