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MedTerm-Chapter 6
| Term | Definition |
|---|---|
| acous/o | hearing |
| ot/o | ear |
| myring/o | eardrum |
| aer/o | air or gas |
| salping/o | tube |
| cerumin/o | wax |
| -acusis | hearing condition |
| External Ear | outer structures of the ear that collect sound |
| auricle | projected part of the external ear |
| external acoustic 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 |
| 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) |
| oval window | membrane that covers the opening between the middle ear and internal ear |
| 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 |
| 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 |
| otorrhagia | bleeding from the ear |
| vertigo | a turning round; dizziness |
| tinnitus | a ringing or buzzing in the ears; a jingling |
| presbycusis | hearing impairment in old age |
Created by:
Cdickinson2
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