CAOHC Exam Study CORRECT SOLUTION GRADE A+

Unit of measurement for frequency (pitch) Hertz (Hz) Unit of measurement for intensity (loudness) Decibel (dB) Risk of damage from noise How loud (intensity) and how long (duration) Steady-state or continuous noise, e.g. generator Lasts 1 second or longer Impulse or Impact noise, e.g. gunfire or nail gun Lasts less than one second Parts of the outer ear Pinna and external auditory canal Parts of the middle ear Tympanic membrane, ossicles, eustachian tube Eustachian tube (auditory tube) Tube connecting the middle ear to the pharynx and equalizes middle ear space with atmospheric pressure Conductive HL occurs here Outer or middle ear Sensorineural hearing loss Hearing loss resulting from damage to the inner ear (cochlea) or the auditory nerve Noise-induced hearing loss (NIHL) 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 Combination of conductive and sensorineural types in the same ear Middle ear bones (ossicles) Malleus (hammer), incus (anvil), stapes (stirrup) Possible early symptoms/signs of noise induced hearing loss Tinnitus; difficulty understanding in presence of background noise; read visual cues Auditory effects of noise NIHL; tinnitus; hyperacusis Non-auditory effects of noise CONTINUED.....