Chapter 17 LOM
pinna
Auricle; flap of the ear.
acoustic neuroma
Benign tumor arising from the acoustic vestibulocochlear nerve (eighth cranial nerve) in the brain.
auditory tube
Channel between the middle ear and the nasopharynx; eustachian tube.
otitis media
Inflammation of the middle ear.
auditory meatus
auditory canal
eustachian tube
auditory tube
auditory nerve fibers
Carry impulses from the inner ear to the brain (cerebral cortex). These fibers compose the vestibulocochlear nerve (cranial nerve VIII).
auditory canal
Channel that leads from the pinna to the eardrum.
stapes
Third ossicle of the middle ear. Stapes means stirrup.
cochle/o
cochlea
vestibule
Central cavity of the labyrinth, connecting the semicircular canals and the cochlea. The vestibule contains two structures, the saccule and utricle, that help to maintain equilibrium.
cholesteatoma
Collection of skin cells and cholesterol in a sac within the middle ear.
Meniere disease
Disorder of the labyrinth of the inner ear; elevated endolymph pressure within the cochlea (cochlear hydrops) and semicircular canals (vestibular hydrops).
malleus
First ossicle of the middle ear; malleus means hammer.
auricle
Flap of the ear; the protruding part of the external ear, or pinna.
perilymph
Fluid contained in the labyrinth of the inner ear.
endolymph
Fluid within the labyrinth of the inner ear
otosclerosis
Hardening of the bony tissue of the middle ear.
deafness
Loss of the ability to hear. Nerve deafness (sensorineural hearing loss)
labyrinth
Maze-like series of canals of the inner ear. This includes the cochlea, vestibule, and semicircular canals.
oval window
Membrane between the middle ear and the inner ear
tympanic membrane
Membrane between the outer and the middle ear; also called the eardrum.
semicircular canals
Passages in the inner ear associated with maintaining equilibrium
incus
Second ossicle (small bone) of the middle ear; incus means anvil.
vertigo
Sensation of irregular or whirling motion either of oneself or of external objects.
tinnitus image
Sensation of noises (ringing, buzzing, whistling, booming) in the ears.
organ of Corti
Sensitive auditory receptor area found in the cochlea of the inner ear.
ossicle
Small bone of the ear; includes the malleus, incus, and stapes.
cochlea
Snail shell-shaped, spirally wound tube in the inner ear; contains hearing-sensitive receptor cells.
cerumen image
Waxy substance secreted by the external ear; earwax.
ot/o
ear
aur/o, auricul/o
ear (see ot/o)
myring/0
eardrum, tympanic membrane
tympan/o
eardrum, tympanic membrane
salping/o
eustachian tube, auditory tube
acous/o
hearing
audit/o
hearing or sense of hearing
mastoid/o
mastoid process
ossicul/o
ossicle
staped/o
stapes (third bone of the middle ear)
vestibul/o
vestibule