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Ear Terms
| Question | Answer |
|---|---|
| pinna | outer part of ear |
| middle ear bones | malleus, incus, stapes |
| oval window | where stapes vibrates to cause sound to travel to inner ear |
| semicircular canals | found in inner ear and maintain balance |
| endolymph fluid | found in cochlear canal |
| organ of Corti | made of cells with projected hairs that transmit sound to acoustic nerve |
| otoscopy | direct visualization of the external auditory canal and tympanic membrane with otoscope |
| otosclerosis | slow growth of spongy bone in the otic capsule, most common cause of progressive hearing loss |
| presbycusis | result of aging with the loss of hair cells in the organ of Corti |
| infectious myringitis | inflammation, hemorrhage,and effusion of fluid into the tissue and at end of external canal and eardrum |
| labrynthitis | inflammation of the labrynth of the inner ear causing severe vertigo |
| mastoiditis | bacterial infection and inflammation of mastoid antrum air cells |
| Meniere's disease | labyrinthine dysfunction known to cause violent attacks of severe vertigo lasting from 10 minutes to several hours |
| otitis externa | inflammation of external ear canal |
| otitis media | inflammation of middle ear |
| cerumeolytics | help remove impacted cerumen |
| myringotomy | incision into TM to relieve pain and drain pus from the middle ear |
| myringoplasty | repair of ruptured TM |
| stapedectomy | removal of all or part of the stapes |
| olfactory | refers to nose |
| olfactory epithelium | real organ of smell |
| how smells get to brain | olfactory epithelium to olfactory bulb to olfactory center in brain |
| cilia | tiny hairs in vestibule of nose that filter air |
| nasal meatus | grooves that separate the turbinates |
| turbinates | curved bony structures that warm, filter, and humidify inhaled air |
| root | upper narrow end of nose |
| external nares | two outer openings separated by septum |
| Merkel's disks | tactile corpuscles in epidermis that relay light touch and superficial pressure |
| Meissner's corpuscles | located in corium below epidermis, receive light pressure sensation |
| Pacini's corpuscles | in subcut. layer, transmit heavy pressure |
| Ruffini's corpuscles | in corium, help send temperature info to brain |
| taste buds | receptors for taste nerve fibers located in papillae |
| papillae | small projections on tongue |
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FMHSAHS102