Unit 3 - Ear Flashcards
ot/o
auricul/o
aur/o
ear
myring/o
tympanic membrane
salping/o
auditory tube; eustachian
cochle/o
cochlea
acous/o
hearing
audi/o
hearing; sense of hearing
audiogram - record of sense of hearing
audit/o
hearing
-cusis
hearing
presbycusis - diminished hearing in old age
-otia
ear condition
macrotia - large ears
microtia - small ears
otomycosis
abnormal condition of ear & fungus
myringotomy
cutting of tympanic membrane
myringitis
inflammation of tympanic membrane
otopyorrhea
py/o = pus
flow or discharge of pus from ear
ossiculoplasty
surgical repair of ossicle
audiogram
record of hearing test
audiometer
measures hearing
audiometry
process of recording hearing
otoscopy
visual examination of ear w/otoscope
AD
right ear
AS
left ear
AU
both ears
ENT
ear, nose and throat
EENT
eyes, ear, nose and throat
outer ear includes:
pinna (auricle) auditory canal (external auditory meatus) - produces cerumen that lubricates and protects the ear
middle ear includes:
Tympanic membrane
Ossicles - 3 small bones
1. malleus
2. incus
3. stapes (staped/o - middle ear bone)
Oval window - separates middle ear from inner ear
Eustachian Tube - leads from middle ear to pharynx
inner ear includes:
“labrinth”
- Cochlea -
1. Auditory liquids (perilymph, endolymph, vibrations travel thru liquids
2. Organ of Corti - sensitive auditory receptor - Auditory Nerve Fiber - leads to brain for hearing
- Function of Vestibule - connects cochlea to 3 semicircular canals for balance
- Organ for Equilibrium - semicircular canals contain 2 membranous sacs - SACCULE and UTRICLE
Types of Deafness
- Conduction deafness - impairment of middle ear ossicles and membranes that transmit sound waves into the cochlea (sound never got there)
- Nerve deafness - impairment of the cochlea or auditory nerve
- Noise induced deafness - headphones; loud noises
otitis media
infection by staphylococcus or streptococcus
tinnitus
ringing sound in the ear
symptom - not disease
vertigo
dizziness
Meniere’s Disease
disorder of the inner ear marked y elevated endolymph pressure. Symptoms include tinnitus & vertigo & loss of hearing
otosclerosis
bone growth around oval window & stapes leading to inner ear causing improper conduction of vibration. Correct w/stapedectomy