AS 357 TEST 3 WITH 100% CORRECT
ANSWERS { GRADED A+}
Anatomy of the Ear - ✔✔Outer, Middle, Inner (Cochlea)
Frequency - ✔✔waves of cycles per system (cps) or Hertz (Hz)
Intensity - ✔✔measure of loudness, in decibels (dB)
Duration - ✔✔measure of time
Safe work environment - ✔✔90 dB
Pain - ✔✔130 dB
Noise - ✔✔Undesirable or distracting sound, Sustained or steady
state, Impulse
Ear fatigue - ✔✔headache, nausea, distraction, irritable
Tinnitus - ✔✔ringing in the ear, delayed -no pain
Characteristics of vibration - ✔✔frequency, intensity, duration
, Physical displacement of parts of the body result in: - ✔✔muscle
tension, discomfort, visual acuity, distraction, fatigue
Conductive Loss - ✔✔mechanical, ear drum, ossicles (bones)
Sensorineural Loss - ✔✔impairment of cochlea, auditory nerve
Ear protection - ✔✔Ear plugs (30dB) Headsets (60dB)
Vision is what percent of orientation - ✔✔90%
Anatomy of eye requires: - ✔✔constant supply of blood and O2
Cornea - ✔✔transparent, refractive, bends or "collect" light
Lens - ✔✔focus' light on the retina
Iris (colored part) - ✔✔controls the amount of light
Retina - ✔✔Photoreceptors
Optic Nerve - ✔✔sends signals to the brain
Cones (Photopic) - ✔✔day vision, bright light, and color
Rods (Scotopic) - ✔✔night vision, low light, black & white
movement and peripheral vision, These transmit electrochemical
impulses through optic nerve to the brain
ANSWERS { GRADED A+}
Anatomy of the Ear - ✔✔Outer, Middle, Inner (Cochlea)
Frequency - ✔✔waves of cycles per system (cps) or Hertz (Hz)
Intensity - ✔✔measure of loudness, in decibels (dB)
Duration - ✔✔measure of time
Safe work environment - ✔✔90 dB
Pain - ✔✔130 dB
Noise - ✔✔Undesirable or distracting sound, Sustained or steady
state, Impulse
Ear fatigue - ✔✔headache, nausea, distraction, irritable
Tinnitus - ✔✔ringing in the ear, delayed -no pain
Characteristics of vibration - ✔✔frequency, intensity, duration
, Physical displacement of parts of the body result in: - ✔✔muscle
tension, discomfort, visual acuity, distraction, fatigue
Conductive Loss - ✔✔mechanical, ear drum, ossicles (bones)
Sensorineural Loss - ✔✔impairment of cochlea, auditory nerve
Ear protection - ✔✔Ear plugs (30dB) Headsets (60dB)
Vision is what percent of orientation - ✔✔90%
Anatomy of eye requires: - ✔✔constant supply of blood and O2
Cornea - ✔✔transparent, refractive, bends or "collect" light
Lens - ✔✔focus' light on the retina
Iris (colored part) - ✔✔controls the amount of light
Retina - ✔✔Photoreceptors
Optic Nerve - ✔✔sends signals to the brain
Cones (Photopic) - ✔✔day vision, bright light, and color
Rods (Scotopic) - ✔✔night vision, low light, black & white
movement and peripheral vision, These transmit electrochemical
impulses through optic nerve to the brain
