Lab 32

tympanic cavity

air-filled space containing auditory ossicles within middle ear

stapes

auditory ossicle attached to oval window

malleus

auditory ossicle attached to tympanic membrane

osseous (bony) labyrinth

bony canal of inner ear in temporal bone

tympanic membrane (eardrum)

cone-shaped, semitransparent membrane attached to the malleus

auditory tube

connects middle ear and pharynx

tectorial membrane

contacts hairs of hearing receptors

scala tympani

extends from apex of cochlea to round window and contains perilymph

scala vestibuli

leads from oval window to apex of cochlea and contains perilymph

external acoustic meatus

s-shaped tube leading to tympanic membrane

membranous labyrinth

tube containing endolymph within osseus labyrinth

ceruminous gland

wax-secreting structure