Module 5: Ch. 15 Flashcards
tympanic membrane (eardrum)
separates the external ear from the middle ear and is not actually part of the external ear
external acoustic meatus (auditory canal)
numerous glands line the canal and secrete cerumen (earwax) to lubricate and protect the ear
middle ear
separated from the external ear by the eardrum; it is an air-filled cavity (tympanic cavity) carved out of the temporal bone;
it contains the ossicles: malleus, incus, and stapes; has several openings and is lined with mucous membrane
cochle/o
land snail
electr/o
electricity
labyrinth/o
maze, inner ear
laryng/o
larynx, voice box
mast/o
mastoid process, breast-shaped
myring/o
eardrum, tympanic membrane
neur/o
nerve
inner ear
consists of a membranous labyrinth or maze-like network of canals located within a bony labyrinth
cochlea
located on the basilar membrane is the organ of Corti containing hair cell sensory receptors for the sense of hearing
vestibule
contains the utricle and saccule, membranous pouches containing perilymph
semicircular canals
contain nerve endings in the form of hair cells that note changes in the position of the head and reports such movement to the brain through fibers leading to the eighth cranial nerve
audi/o
to hear
aur/i
ear
ot/o
ear
pharyng/e
pharynx
presby/o
old
py/o
pus
scler/o
hardening
staped/o
stapes, stirrup
steat/o
fat
tympan/o
eardrum, tympanic membrane
chol/e
gall or bile
auricle (pinna)
collects and directs sound waves into the auditory canal and then into the tympanic membrane
external ear
the appendage on the side of the head consisting of the auricle or pinna and the external acoustic meatus
acoustic
acoust -ic
hearing = pertaining to
pertaining to the sense of hearing
audiologist
one who specializes in diagnosing disorders of hearing
audiology
study of hearing disorders
audiometer
medical instrument used to measure hearing
audiometry
measurement of the hearing sense
auditory
pertaining to the sense of hearing
aural
pertaining to the ear
auricle
aur/i -cle
ear = small
external portion of ear, known as the pinna
cerumen
earwax, the yellowish substance secreted by the glands in the auditory canal of the external ear
cochlea
portion of the inner ear shaped like a snail shell; contains the organ of Corti
deafness
complete or partial loss of the ability to hear
ear
contains structures for both the sense of hearing and the sense of balance
endaural
end- aur -al
within = ear = pertaining to
pertaining to within the ear
equilibrium
state of balance
eustachian tube
narrow tube between the middle ear and the throat that serves to equalize pressure on both sides of the eardrum
incus
middle of the three ossicles; also called the anvil
labyrinth
the inner ear; made up of the vestibule, cochlea, and semicircular canals
malleus
largest of the three ossicles; also called the hammer
monaural
pertaining to one ear
myringectomy
surgical excision of the tympanic membrane
myringoplasty
surgical repair of the tympanic membrane
myringotome
surgical instrument used for cutting the eardrum
ossicle
small bone; any one of the three bones of the middle ear; the malleus, the incus, or the stapes
otic
ot -ic
ear = pertaining to
pertaining to the ear
otitis
inflammation of the ear
otitis media
inflammation of the middle ear
otodynia
pain in the ear, earache; also referred to as otalgia
otolaryngologist
physician who specializes in the study of the ear and larynx (voice box)
otolaryngology
study of the ear and larynx
otolith
ot/o -lith
ear = stone
ear stone
otomycosis
ot/o myc -osis
ear = fungus = condition
fungal infection of the ear
otoplasty
plastic surgical repair of the ear
otosclerosis
hardening (stiffening) condition of the ear structures characterized by progressive deafness
oval window
membrane in the middle ear into which the footplate of the stapes fits
perilymph
peri- -lymph
around = serum, pale fluid
serum fluid of the inner ear
presbycusis
presby -cusis
old = hearing
impairment of hearing that occurs with aging
stapes
innermost of the ossicles in the middle ear; also called the stirrup
tinnitus
the sensation of ringing or roaring sounds in one or both ears is a symptom associated with damage to the auditory cells in the inner ear
tympanic
pertaining to the eardrum (tympanic membrane)
utricle
small, saclike structure of the labyrinth of the inner ear
vertigo
sensation of instability and loss of equilibrium; patients feel like they are spinning in space or objects around them are spinning
AC
air conduction
BC
bone conduction
db, dB
decibel
ENT
ear, nose, throat (otorhinolaryngology)
HD
hearing distance
OM
otitis media