Lab 32: Ear & Hearing
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External Acoustic Meatus
S-shaped tube leading to eardrum
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
Tympanic Membrane (Eardrum)
cone-shaped, semi-transparent membrane attached to malleus
Auditory Tube
connects middle ear & pharynx
Tectorial Mmebrane
contact hairs of hearing receptors
Scala tympani
extends from apex of cochlea to round window & contains perilymph
Scala vestibuli
leads from oval window to apex of cochlea & contains perilymph
Membrane Labyrinth
tube containing endolymph within osseus labyrinth
Ceruminous Gland
wax-secreting structure
