Exam Study Prep for CAOHC Hearing Certification Questions and Answers

Exam Study Prep for CAOHC Hearing Certification Questions and Answers Unit of measurement for frequency (pitch) - CORRECT ANSWER-Hertz (Hz) Unit of measurement for intensity (loudness) - CORRECT ANSWER-Decibel (dB) Risk of damage from noise - CORRECT ANSWER-How loud (intensity) and how long (duration) Steady-state or continuous noise, e.g. generator - CORRECT ANSWER-Lasts 1 second or longer Impulse or Impact noise, e.g. gunfire or nail gun - CORRECT ANSWER-Lasts less than one second Parts of the outer ear - CORRECT ANSWER-Pinna and external auditory canal Parts of the middle ear - CORRECT ANSWER-Tympanic membrane, ossicles, eustachian tube Eustachian tube (auditory tube) - CORRECT ANSWER-Tube connecting the middle ear to the pharynx and equalizes middle ear space with atmospheric pressure Conductive HL occurs here - CORRECT ANSWER-Outer or middle ear Sensorineural hearing loss - CORRECT ANSWER-Hearing loss resulting from damage to the inner ear (cochlea) or the auditory nerve Noise-induced hearing loss (NIHL) - CORRECT ANSWER-Condition caused by the destruction of hair cells, the organs responsible for hearing, as a result of sounds that are "too long, too loud, or too close"; a sensorineural hearing loss Mixed hearing loss - CORRECT ANSWER-Combination of conductive and sensorineural types in the same ear Middle ear bones (ossicles) - CORRECT ANSWER-Malleus (hammer), incus (anvil), stapes (stirrup) Possible early symptoms/signs of noise induced hearing loss - CORRECT ANSWERTinnitus; difficulty understanding in presence of background noise; read visual cues Auditory effects of noise - CORRECT ANSWER-NIHL; tinnitus; hyperacusis