Chapter 17 Ear Flashcards
auditory canal
channel that leads from the pinna to the eardrum
auditory meatus
auditory canal
auditory nerve fibers
carry impulses from the inner ear to the brain (celebral cortex0
- these fibers compose the vestibulocochlear nerve (cranial nerve VIII)
auditory tube
channel between the middle ear and nasopharyanx
-aka eustachian tube =
auricle
protruding part of the ear
- aka pinna
cerumen
waxy substance secreted by the external ear
aka earwax
cochlea
snail shell shaped, spirally wound tube in the inner ear
- contains hearing-sensitive receptor cell
endolymph
fluid within the labyrinth of the inner ear
eustachian tube
auditory tube
incus
2nd ossicle (small Bone) of the middle ear
- the anvil
labyrinth
maze like series of the canals of the inner ear
- includes cochlea, vestibule, and semicircular canals
malleus
1st ossicle of the middle ear
- the hammer
organ of Corti
sensitive auditory receptor area found in the cochlea of the inner ear
ossicle
small bone of the ear
- includes malleus, incus, and stapes
oval window
membrane between the middle ear and inner ear
pinna
auricle- flap of the ear
semicircular canals
passages in the inner ear associated with maintaining stability
tympanic memebrane
membrane between outer and middle ear
- aka eardrum
vestibule
central cavity of the labyrinth connecting the semicircular canals and cochlea
acoustic neuroma
benign arising from the acoustic vestibulocochlear nerve (8th cranial nerve) in the brain