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Advanced Medical Terminology
Lesson 17: Sense Organs; Part 2- The Ear
41
Medical
Professional
09/15/2008

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Term
AUDITORY CANAL
Definition
Channel that leads from the pinna to the eardrum
Term
AUDITORY MEATUS
Definition
Auditory canal
Term
AUDITORY NERVE FIBERS
Definition
Carry impulses from the inner ear to the brain (cerebral cortex). These fibers compose the vestibulocochlear nerve (cranial nerve VIII)
Term
AUDITORY TUBE
Definition
Channel between the middle ear and the nasopharynx; eustachian tube
Term
AURICLE
Definition
Flap of the ear; the protruding part of the external ear, or pinna
Term
CERUMEN
Definition
Waxy substance secreted by the external ear; aka ear wax
Term
COCHLEA
Definition
Snail-shaped, spirally wound tube in the inner ear; contains hearing-sensitive receptor cells
Term
ENDOLYMPH
Definition
Fluid within the labyrinth of the inner ear
Term
EUSTACHIAN TUBE
Definition
Auditory tube
Term
INCUS
Definition
Second ossicle of the middle ear
Term
LABYRINTH
Definition
Maze-like series of canals of the inner ear. This includes the cochlea, vestibule, and semicircular canals
Term
MALLEUS
Definition
First ossicle of the middle ear
Term
ORGAN OF CORTI
Definition
Sensitive auditory receptor area found in the cochlea of the inner ear
Term
OSSICLE
Definition
Small bone of the ear; includes the malleus, incus, and stapes
Term
OVAL WINDOW
Definition
Membrane between the middle ear and the inner ear
Term
PERILYMPH
Definition
Fluid contained in the labyrinth of the inner ear
Term
PINNA
Definition
Auricle, flap of the ear
Term
SEMICIRCULAR CANALS
Definition
Passages in the inner ear associated with maintaining equilibrium
Term
STAPES
Definition
Third ossicle of the middle ear
Term
TYMPANIC MEMBRANE
Definition
Membrane between the outer and the middle ear; aka the eardrum
Term
VESTIBULE
Definition
Central cavity of the labyrinth, connecting the semicircular canals and the cochlea. The vestibule contains two structures, the saccule and utricle, that help maintain equilibrium
Term
ACOUS/O
Definition
Hearing
Term
AUDI/O
Definition
Hearing, the sense of hearing
Term
AUDIT/O
Definition
Hearing
Term

AUR/O

AURICUL/O

Definition
Ear
Term
COCHLE/O
Definition
Cochlea
Term
MASTOID/O
Definition
Mastoid process
Term
MYRING/O
Definition
Eardrum, tympanic membrane
Term
OSSICUL/O
Definition
Ossicle
Term
OT/O
Definition
Ear
Term
SALPING/O
Definition
Eustachian tube, auditory tube
Term
STAPED/O
Definition
Stapes (third bone of the middle ear)
Term
TYMPAN/O
Definition
Eardrum, tympanic membrane
Term
VESTIBUL/O
Definition
Vestibule
Term

-ACUSIS

-CUSIS

Definition
Hearing
Term
-METER
Definition
Instrument to measure
Term
-OTIA
Definition
Ear condition
Term
ACOUSTIC NEUROMA
Definition
Benign tumor arising from the acoustic vestibulocochlear nerve (eighth cranial nerve) in the brain. Tumor causes tinnitus (ringing in the ears), vertigo (dizziness), and decreased hearing.
Term
CHOLESTEATOMA
Definition
Collection of skin cells and cholesterol in a sac within the middle ear.Accompanied with foul-smelling discharge and perforations in the tympanic membrane.
Term
DEAFNESS
Definition
Loss of ability to hear. Nerve deafness (sensorineural hearing loss) is from impairment of the cochlea or auditory nerve. Conductive deafness is from impairment of the middle ear ossicles and membranes transmitting sound waves into the cochlea
Term
MENIERE DISEASE
Definition
Disorder of the labyrinth of the inner ear; elevated endolymph pressure within the cochlea (cochlear hydrops) and semicircular canals (vestibular hydrops)
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