CAOHC Exam Questions and Verified Answers, 100% Score Guarantee Pass (Latest 2025) Unit of measurement for frequency (pitch) - Correct Answers ✅Hertz (Hz) Unit of measurement for intensity (loudness) - Correct Answers ✅Decibel (dB) Risk of damage from noise - Correct Answers ✅How loud (intensity) and how long (duration) Steady-state or continuous noise, e.g. generator - Correct Answers ✅Lasts 1 second or longer Impulse or Impact noise, e.g. gunfire or nail gun - Correct Answers ✅Lasts less than one second Parts of the outer ear - Correct Answers ✅Pinna and external auditory canal Parts of the middle ear - Correct Answers ✅Tympanic membrane, ossicles, eustachian tube Eustachian tube (auditory tube) - Correct Answers ✅Tube connecting the middle ear to the pharynx and equalizes middle ear space with atmospheric pressure 1 / 2
CAOHC Exam Questions and Verified Answers, 100% Score Guarantee Pass (Latest 2025) Conductive HL occurs here - Correct Answers ✅Outer or middle ear Sensorineural hearing loss - Correct Answers ✅Hearing loss resulting from damage to the inner ear (cochlea) or the auditory nerve Noise-induced hearing loss (NIHL) - Correct Answers ✅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 Answers ✅Combination of conductive and sensorineural types in the same ear Middle ear bones (ossicles) - Correct Answers ✅Malleus (hammer), incus (anvil), stapes (stirrup) Possible early symptoms/signs of noise induced hearing loss - Correct Answers ✅Tinnitus; difficulty understanding in presence of background noise; read visual cues Auditory effects of noise - Correct Answers ✅NIHL; tinnitus; hyperacusis
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