Histology Ear SIUmed Flashcards
(25 cards)
hair cells of ear
columnar mechanoreceptor cells
hair cells are found
- maculae of saccule
- maculae of utricle
- ampullae of semicircular canals
- organ of Corti
- EXCEPT; stria vascularis
labyrinth comprise of
- saccule
- utricle
- semicircular canals
- scala media
- EXCEPT; scala tympani
membranous labyrinth is filled with
endolymph
fluid environment for hair cells
endolymph
endolymph secreted by
stria vascularis
stria vascular is located
scala media
contains endolymph
scala media
endolymph drain away from membranous labyrinth through a passage
endolymphatic duct
imbalance between production and drainage of endolymph
meniere’s disease
damage to hair cells in organ of Corti; effect on
hearing
disturbance of hair cells in ampulla of semicircle canal; effect of
balance/vertigo
disturbance of hair cells in macula of saccule; effect on
balance/vertigo
disturbance of hair cells in macula of utricle; effect on
balance/vertigo
perilymph fills
spaces of bony labyrinth external to membranous labyrinth
contains perilymph
scala vestibuli
otoliths found
saccule and utricle
crest with cupola; feature of
ampulla of semicircular canal
basal and tectorial membrane are most closely associated with
sensing vibratory stimuli (sound)
organ of Corti, cilia and steriocilia are in intimate contact with
tectorial membrane
hair cells in organ of corti synapse onto nerve fibers, located
spiral ganglion
resigner’s membrane separate Scala media from
scala vestibuli
basilar membrane separates the scala media from
scala tympani
round window separates middle ear from
scala tympani
