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Chapter 6
Medical Terminology Chapter 6: The Ear
| Question | Answer |
|---|---|
| The two combining forms for ear are | aur/i and ot/o |
| The combining form for ear wax is? Example | cerumin/o; ceruminosis=excessive ear wax |
| The combining form for the auditory tube comes from the Greek word salpinx, meaning trumpet. That combining form is | salping/o; salpingitis=inflammation of the auditory tube |
| Combining form for eardrum are | tympan/o and myring/o |
| projected part of the external ear; also called auricle (little ear) | pinna =feather |
| a waxy substance secreted by glands located throughout the external canal | cerumen |
| 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, also maintain balance and equilibrium | internal ear also called labyrinth |
| coiled tubular structure of the internal ear that contains the spiral organ | cochlea |
| structure located in the cochlea; contains receptors (hair cells) that receive vibrations and generate nerve impulses for hearing; also called spiral organ | organ of Corti |
| The opening between the middle ear and the internal ear is covered with a membrane called the ___ ___, which is named for its rounded shape and window-like covering | oval window |
| bleeding from the ear | otorrhagia |
| purulent drainage from the ear | otorrhea |
| earache; also called otalgia | otodynia |
| excessive buildup of wax in the ear that often reduces hearing acuity, especially in elderly persons | cerumen impaction |
| benign, but life-threatening tumor of the vestibular division of the vestibulocochlear nerve (cranial nerve VIII) that causes vertigo, tinnitus, and hearing loss; also called vestibular schwannoma | acoustic neuroma |
| disorder of the internal ear resulting from an excessive buildup of endolymph, causing episodes of vertigo, tinnitus, nausea, vomiting, and hearing loss; one or both ears can be affected, and attacks vary in both frequency and intensity | Meniere disease |
| hearing impairment in old age; also called presbycusis | presbyacusis |
| Using the combining forms for both air and ear, the term for inflammation of the middle ear caused by changes in atmospheric pressure is | aerotitis media |
| process of measuring hearing | audiometry |
| electrodiagnostic testing that uses computerized equipment to measure involuntary responses to sound within the auditory nervous system; commonly used to assess hearing in newborns; also called brainstem auditory evoked response (BAER) | brainstem auditory evoked potential (BAEP) |
| otoscopic observation of the tympanic membrane as air is released into the external acoustic meatus; immobility indicates the presence of middle ear effusion (fluid buildup), which occurs as a result of otitis media | pneumatic otoscopy |
| a two-pronged, fork-like instrument that vibrates when struck; used to test hearing, especially bone conduction; two types are Webber test and Rinne test | tuning fork |
| the term for a record of hearing measurement is | audiogram |
| A conductive hearing loss is usually caused in the external or ___ ear, whereas a ___hearing loss involves a problem in the cochlea or cochlear (auditory) nerve | middle ear, sensorineural |
| irrigation of the external ear canal, often to remove excessive buildup of cerumen | ear lavage |
| introduction of a medicated solution into the external canal, usually administered by drop (gt) or drops (gtt) in the affected ears | ear instillation |
| hearing condition | -acusis |
| structures in the middle of the ear that vibrate sound from the tympanic membrane to the internal ear | middle ear |
| fluid within the membranous labyrinth of the internal ear | endolymph |
| fluid that fills the bony labyrinth of the internal ear | perilymph |
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