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MedTerm Mod 17 *Ear*
Terms, Abbreviations, & Meanings
| Question | Answer |
|---|---|
| AD | right earLatin: auris dextra |
| AOM | acute otitis media |
| AS | left earLatin: auris sinistra |
| EENT | eyes, ears, nose & throat |
| ENG | electronystagmography |
| ENT | ears, nose, & throat |
| HEENT | head, eyes, ears, nose & throat |
| PE tube | pressure-equalizing tube |
| SOM | serous otitis media |
| acoustic | pertaining to hearing |
| auditory canal | channel leading from ear flap to eardrum |
| auditory meatus | about an inch in length, is a slender canal lined with glands that secrete cerumen |
| auditory nerve fibers | carry impulses from inner ear to cerebral cortex |
| auditory tube | channel between middle ear & throat; eustachian tube |
| aural | pertaining to the ear |
| auricle | skin-covered cartilaginous flap, projects from the side of the head; pinna |
| cerumen | ear wax; lubricates the ear and prevents the entry of foreign particles into internal portions of ear |
| cochlea | snail-shaped, spirally wound tube in inner ear |
| contains hearing-sensitive receptors | cochlea |
| cochlear | pertaining to cochlea |
| deafness | loss of ability to hear |
| endolymph | fluid within labyrinth of inner ear, conducts cound waves |
| eustachian tube | channel between middle ear & throat; auditory tube |
| incus | small, anvil-shaped ossicle in middle ear |
| the second ossicle is | the incus |
| labyrinth | maze-like series of canals of inner ear |
| cochlea, vestibule & semicircular canals make up | the labyrinth |
| malleus | hammer-shaped, small ossicle in middle ear |
| ossicle | small bone |
| malleus, incus, & stapes make up | the ossicles of middle ear |
| otic | pertaining to the ear |
| oval window | membrane between middle & inner ears |
| perilymph | fluid contained in labyrinth |
| pinna | outer ear flap; auricle |
| postauricular | pertaining to behind the ear |
| salpingopharyngeal | pertaining to eustachian tube & throat |
| semicircular canals | passageways in inner ear that are associated with maintaing equilibrium |
| stapes | small, stirrup-shaped bone in middle ear |
| third ossicle | stapes |
| tympanic membrane | shiny, oval, semitransparent membrane between outer & middle ear |
| eardrum is another name for | the tympanic membrane |
| vestibule | central cavity of labyrinth, connecting cochlea & semicircular canals |
| vestibulocochlear | pertainings to vestibule & cochlea |
| ear serves dual functions as a sense organ | hearing & equilibrium |
| anatomical regions of th ear | outer, middle, and inner |
| outer ear consists of | auricle & auditory meatus |
| lies at the end of the external auditory canal and at the entry to the middle ear | tympanic membrane |
| articulate with one another | ossicles |
| provides for an equalization of air pressure between middle ear & external atmosphere | eustachian tube |
| membranous labyrinth | contains a protein-rich fluid called endolymph and is surrounded by the bony labyrinth |
| bony labyrinth | contains a clear liquid known as perilymph & surrounds membranous labyrinth |
| organ of Corti | sensitive receptor whose hair cells relay sound waves to auditory nerve fibers |
| ogran of Corti is located | in the cochlea |
| auditory nerve fibers convey impulses to the auditory region of the cerebral cortex from | the organ of Corti |
| The term cochlea means | snail |
| Sound waves, conducted by air, enter the ear with the aid of | the auricle |
| sound waves entering the auricle, are conducted along the auditory meatus to | the tympanic membrane |
| when the taut tympanic membrane recives sound waves it | begins to vibrate |
| vibrations by the eardrum move | the ossicles |
| ossicle amplfiy sound waves & conduct them through the middle ear to | the oval window & into inner ear |
| sounds coming through oval window are picked up by | sensory hair cells of cochlea, |
| structures of the ear involved in maintaining equilibrium are found in | the vestibule & semicircular canals |
| Sensitive hair cells and fluid within these structures allow | detection of changes in the position of the head |
| Movement of the hair cells within the ___ generate nerve impulses | macula |
| communicate through the brain to the body's muscles and provide for the recovery of balance | hair cells within macula |