BHC-Pedia
Title |
Body |
|---|---|
| Aditus |
Opening between the pneumaticized mastoid air cells and the middle ear space. |
| American Academy of Audiology |
Largest of the professional organizations for audiologists. |
| American Speech-Language Hearing Association |
Professional organization for both speech-language pathologists and audiologists |
| Amplifier |
a device that increases the intensity of the sound |
| Amplitude |
the amount of displacement of something; the amount of movement. Example: the amplitude of the vibration of the air molecules is the distance back and forth of the vibration. Related to the intensity of the sound. |
| Ampulla |
the enlarged section of the semicircular canal in which the sense organ for head rotation is located. |
| Anatomy |
the study of the structures of the body. |
| Antagonistic |
pulling in opposite directions. The contraction of the stapedial muscle and tensor tympani are antagonistic. |
| Antihelix |
part of the pinna that is just beyond the concha; it is a rim of cartilage. |
| Arch of Corti |
also called pillars of Corti. Supporting structure located between the inner and outer hair cells within the organ of Corti. |
| Areal Ratio |
the relative difference in the size of the tympanic membrane to the stapes footplate. Because of this size difference, sound is concentrated as it reaches the inner ear, and the sound pressure is enhanced by about 27 dB. |
| Au.D. |
Professional doctoral degree designator for audiologists. Fellowship status for new members of the American Academy of Audiology and certification of new members by the American Speech-Language Hearing Association will require a doctoral degree in 2007. |
| Audiologist |
health care professional responsible for the assessment and management of persons with hearing and/or balance disorders. |
| Audiology |
the science of the assessment and management of hearing and balance disorders. |
| Audiometer |
electronic device used to assess hearing. Produces pure-tone signals at calibrated intensities and allows for controlled presentation of speech signals to the patient’s ears. |
| Auricle |
synonym for the pinna. Portion of the external ear that gathers sound waves and funnels them to the external auditory meatus. |
| Axon |
portion of a neuron than conveys the neural impulse away from the cell body to the terminal button. Basilar membrane – membrane inside the cochlea that separates scala media and scala tympani; on this membrane rests the organ of Corti. |
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