Exam (elaborations)
PLTW Biomed MI_ 1.3 Ear and Hearing CFU (1)
PLTW Biomed MI_ 1.3 Ear and Hearing CFU (1)
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PLTW Biomed MI: 1.3 Ear and Hearing CFUAudiogram - ANS-A graphic representation of the relation of vibration frequency and the
minimum sound intensity for hearing
Cochlear Implant - ANS-An electrical prosthetic device that enables individuals with
sensorineural hearing loss to recognize some sounds and that consists of an external
microphone and speech processor that receives and converts sound waves into electrical
signals which are transmitted to one or more electrodes implanted into the cochlea where they
stimulate the auditory nerve
Conductive Hearing Loss - ANS-Hearing loss or impairment resulting from interference with the
transmission of sound waves to the cochlea
Hearing Aid - ANS-An electronic device usually worn by a person amplifying sound before it
reaches the receptor organs
Inner Ear - ANS-the essential part of the vertebrate organ of hearing and equilibrium that
includes the vestibule, the semicircular canals, and cochlea
Middle Ear - ANS-The intermediate portion of the ear containing a chain of three ossicles that
extends from the tympanic to the oval window and transmits vibrations to the inner ear
Outer Ear - ANS-The outer visible portion of the ear that collects and directs sound waves
toward the tympanic membrane by way of a canal which extends inward through the temporal
bone
Sensorineural Hearing Loss - ANS-Hearing loss or impairment resulting from problems with
auditory nerves
Sound - ANS-Mechanical energy that is transmitted by longitudinal pressure waves in a medium
(such as water or air)
How do frequency and amplitude affect how humans interpret sound? - ANS-The greater the
amplitude the louder the sound perceived
What causes different types of hearing loss? - ANS-You could be born with it (Sensorineural
hearing loss)
Infection/injury (conductive hearing loss)
Prolonged noise exposure/deafness (sensorineural hearing loss)
Age (sensorineural hearing loss)
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