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Chapter 6
Term | Definition |
---|---|
Middle Ear | Region between external acoustic meatus and internal ear |
acous/o, audi/o | Hearing |
Aer/o | Air or Gas |
Aur/l, ot/o | Ear |
Cerumin/o | Wax |
Myring/o, tympan/o | Eardrum |
Salping/o | Tube |
-acusis | Hearing condition |
External Ear | Made up of the auricle (pinna) and the external acoustic meatus. |
Internal Ear | Inner ear or labyrinth, receives sound vibrations and passes them through intricate, intercommunicating tubes and chambers to the spiral organ within the cochlea. |
Tympanotomy | An incision into the eardrum |
Otalgia | Earache |
Otorrhagia | Bleeding from the ear |
Tinnitus | A ringing or buzzing in the ear |
Vertigo | A turning round, dizziness |
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 |
Malleus | First of the three auditory ossicles of the middle ear. Also called the hammer |
Incus | Middle of the three auditory ossicles of the middle ear. Also called the anvil. |
Stapes | Last of the three auditory ossicles of the middle ear. Also called the stirrup |
Perilymph | Fluid that fills the bony labyrinth of the internal ear |
Endolymph | Fluid within the membranous labyrinth of the internal ear |
Saccule | Smaller of two sacs within the membranous labyrinth of the vestibule in the internal ear |
Semicircular canals | Three canals within the internal ear that contain specialized receptor cells that generate nerve impulses with body movement |
Cerumen Impaction | Excessive buildup of wax in the ear that often reduces hearing acuity |
Myringitis | Inflammation of the eardrum |
Otitis media | Inflammation of the middle ear |
Otosclerosis | Hardening of the bony tissue in the ear |
Labyrinthitis | Inflammation of the internal ear (labyrinth), usually accompanied by vertigo and deafness. |
Presbyacusis | Hearing impairment in old age |