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Chapter 6 Med Terms
CNHP 2010 Chapter 6
Term | Definition |
---|---|
acous/o | hearing |
audi/o | hearing |
aur/i | ear |
ot/o | ear |
myring/o | eardrum |
tympan/o | eardrum |
aer/o | air or gass |
salping/o | tube |
cerumin/o | wax |
-acusis | hearing condition |
external ear | outer structure of the ear that collect sound |
auricle | projected part of the external ear |
pinna | projected part of the external ear |
external acoustic meatus | external passage for sounds collected from the auricle to the tympanic membrane |
external auditory meatus | external passage for sounds collected from the auricle to the tympanic membrane |
cerumen | a waxy substance secreted by glands located throughout the external canal |
middle ear | structures in the middle of the ear that vibrate sound from the tympanic membrane to the internal ear |
tympanic membrane | drum-like structure that receives sound collected in the external acoustic meatus and amplifies it through the middle ear |
tympanum | drum-like structure that receives sound collected in the external acoustic meatus and amplifies it through the middle ear |
malleus (hammer) | first of the three auditory ossicles of the middle ear |
incus (anvil) | middle of the three auditory ossicles of the middle ear |
stapes (stirrup) | last of the three auditory ossicles of the middle ear |
eustachian tube | tube connecting the middle ear to the pharynx (throat) |
auditory tube | tube connecting the middle ear to the pharynx (throat) |
oval window | membrane that covers the opening between the middle ear and internal ear |
Internal ear also sense body movement and position to maintain balance & equilibrium | intricate, fluid-filled, intercommunicating bony and membranous passages that function in hearing by relaying sound waves to auditory nerve fibers on a path to the brain for interpretation; |
labyrinth also sense body movement and position to maintain balance and equilibrium | intricate, fluid-filled, intercommunicating bony and membranous passages that function in hearing by relaying sound waves to auditory nerve fibers on a path to the brain for interpretation; |
cochlea | coiled tubular structure of the internal ear that contains the spiral organ of Corti; cochlear duct is the membranous tube within the cochlea |
perilymph | fluid that fills the bony labyrinth of the internal ear |
endolymph | fluid within the membranous labyrinth of the internal ear |
spiral organ | structure located in the cochlea; contains receptors (hair cells) that receive vibrations and generate nerve impulses for hearing |
organ of corti | structure located in the cochlea; contains receptors (hair cells) that receive vibrations and generate nerve impulses for hearing |
vestibule | middle part of the internal ear, in front of the semicircular canals and behind the cochlea, that contains the utricle and the saccule; functions to provide body balance and equilibrium |
utricle | the larger of two sacs within the membranous labyrinth of the vestibule in the inner ear |
saccule | the smaller of two sacs within the membranous labyrinth of the vestibule in the inner ear |
semicircular canals | three canals within the inner ear that contain specialized receptor cells that generate nerve impulses with body movement |
otalgia | earache |
otodynia | earache |
otorrhagia | bleeding from the ear |
otorrhea | purulent drainage from the ear |
tinnitus | a ringing or buzzing in the ears; a jingling |
vertigo | a turning round; dizziness |