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sensory system
audition
20
Anatomy
Undergraduate 1
07/16/2007

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Cards

Term
___ are perceived as sounds
Definition
airborne vibrations
Term
what are the airborne sounds funneled by?
Definition
pinna or auricle
Term
external auditory meatus
Definition
canal leading to the middle ear
Term
where does the external acoustic meatus end?
Definition
tympanic membrane-which the air movements produce displacements of
Term
what is the middle ear also referred to as?
Definition
tympanic cavity
Term
what is the middle ear?
Definition
an air-filled cavity containing the auditory ossicles[image][image]
Term
malleus incus and stapes-identify them
Definition
[image]
Term
what type of joints are between the malleus, incus and stapes
Definition
synovial
Term
what muscles of the tympanic cavity act upon the bones
Definition
stapedius and tensor tympani[image][image]
Term
footplate of stapes fits into small opening called ______ _____
Definition
oval window[image]
Term
what is the middle ear connected to?
Definition
pharynx
Term
what connects teh middle ear and the pharynx
Definition
eustachian tube-responsible for teh equilization of pressure
Term
what is the inner ear often called?
Definition
a labyrinth
Term
what surrounds teh membrane?
Definition
a perilymph[image]
Term
what is within the perilymph
Definition
an endolymph[image]
Term
what is teh endolymph?
Definition
a fluid similar to intracellular fluid
Term
what is teh cochlea?
Definition
AN ORGAN OF HEARING[image]
Term
what organ is within the cochlea
Definition
organ of corti-receptors are located[image]
Term
organ of corti
Definition
transducer that converts vibrations into nerve impulses
Term
receptors are hair cells and their axons make up the ____nerve
Definition
cochlear nerve VIII
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