Ch 13 - Ear Flashcards
auricle
external visible part of the ear
direct sound waves into the external auditory canal
eustachian tube
passage between the middle ear and the pharynx; equalizes air pressure on both sides of the tympanic membrane
labyrinth
bony spaces within the temporal bone
cochlea, semicircular canals, vestibule
cochlea
coiled portion of the inner ear containing the sensory organ for hearing; connects to the oval window in the middle ear
semicircular canals and vestibule
sensory organs of balance; contain receptors and endolymph that provide sensory information about equilibrium
combining form of tympanic membrane
myring/o
combining form of ear
aur/i
ot/o
otomycosis
abnormal condition of fungus in the ear
otopyorrhea
discharge of pus from the ear
otorrhea
discharge from the ear
otosclerosis
hardening of ear
acoustic neuroma
benign tumor within the internal auditory canal growing from the acoustic nerve; may cause hearing loss and may damage structures of the cerebellum as it grows
cholesteatoma
cystlike mass composed of epithelial cells and cholesterol occurring in the middle ear; may be associated with chronic otitis media
meniere disease
chronic disease of the inner characterized by a sensation of spinning motion (vertigo) ringing in the ears (tinnitis, aural fullness, fluctuating hearing loss; symptoms are related to a change in volume or composition of fluid within the labyrinth
presbycusis
hearing impairment occurring with age
