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A&P 2 Lab pgs32-35
hearing and other senses
18
Anatomy
Undergraduate 1
03/24/2013

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Cards

Term
pinna
Definition
outer fleshy ear flap
Term
external auditory meatus
Definition
outer ear canal; extends to the tympatic membrane
Term
outer ear
Definition
composed of pinna and external auditory meatus
Term
tympatic membrane
Definition
eardrum; separates outer and middle ear
Term
temporal bone
Definition
surrounds the middle and inner ear components
Term
tympatic cavity
Definition
cavity of the middle ear, contains auditory ossicles
Term
malleus
Definition
attached to the tympatic membrane and the next bone
Term
incus
Definition
attached to malleus and to the next bone
Term
stapes
Definition
attached to incus and the oval window (fenestra ovalis) of the cochlea
Term
semicircular canals
Definition
3 per ear and are at right angles to each other; portions of the inner ear which function in the sensation of head movements; bulb-like portions called ampullae
Term
vestibular apparatus
Definition
portion of the inner ear which functions in the sensation of head position
Term
cochlea
Definition
portion of the inner ear concerned with sound transmission
Term
fenestra ovalis
Definition
oval opening of cochlea where the stapes fits
Term
fenestra rotunda
Definition
round opening in cochlea to relieve internal fluid pressure in the cochlea during vibrations
Term
auditory nerves
Definition
cranial nerve 8; carries impulses from the inner ear to the medulla and the pons of the brain; vestibular and cochlear branches
Term
bone conduction
Definition
sound waves are conveyed by the bones of the head to the fluids of the cochlea
Term
air conduction
Definition
sound waves are conveyed by air to the fluids of the cochlea--better than bone conduction
Term
otitis media
Definition
middle ear infection
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