Lab 37 Ear and Hearing
What test is done to assess possible conduction deafnesss by comparing bone and air conduction?
Rinne Test (tuning fork)
External acoustic meatus
S-shaped tube leading to tympanic membrane
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
Bony labyrinth
bony chambers of inner ear in temporal bone
Membranous labyrinth
chambers containing endolymph within bony labyrinth
Tympanic membrane (eardrum)
cone-shaped, semitransparent membrane attached to malleus
Pharyngotympanic (auditory) tube
connects middle ear and pharynx
Tectorial membrane
contacts hairs of hearing receptors
Sound loudness is measured in
decibels
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
Hearing is interpreted in the
temporal lobe of the cerebrum
Cochlear duct
tube within cochlea containing spiral organ and endolymph
The middle ear bones articulate from tympanic membrane to oval window in what sequence?
malleus, incus, stapes
