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Ergonomics Flashcards

7 cards from real NSC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Ergonomics flashcards as text

  1. Which muscle group is MOST often affected by prolonged static loading during computer work?

    Answer: Trapezius and neck muscles

    The trapezius and cervical muscles sustain prolonged low-level static contraction to hold the head and shoulders in position during desk work.

  2. What ergonomic risk factor is associated with using a vibrating tool for extended periods?

    Answer: Hand-arm vibration syndrome (HAVS)

    Hand-arm vibration syndrome (HAVS) causes vascular and neurological damage in the hands and arms from prolonged exposure to vibrating tools.

  3. In ergonomic workstation design, what is the recommended distance between the eyes and a computer monitor?

    Answer: 20–40 inches

    OSHA and NSC guidelines recommend placing the monitor approximately 20–40 inches from the eyes to reduce eyestrain and neck strain.

  4. Which ergonomic hazard category does 'whole-body vibration' (WBV) fall under?

    Answer: Physical ergonomic hazard

    Whole-body vibration is classified as a physical ergonomic hazard, commonly affecting forklift operators and truck drivers.

  5. A grocery cashier develops wrist pain after months of scanning products. Which control measure is MOST effective at reducing cumulative trauma?

    Answer: Redesigning the checkout station to reduce reach and wrist angles

    Engineering controls like workstation redesign address the root cause of awkward postures and are more effective than personal protective devices.

  6. What is the recommended keyboard tray position to maintain a neutral wrist posture while typing?

    Answer: Level or slightly tilted downward (negative tilt)

    A level or negative-tilt keyboard position allows the wrists to remain straight and reduces ulnar deviation and wrist extension.

  7. Which of the following best describes a 'push' vs. 'pull' comparison in cart ergonomics?

    Answer: Pushing is generally safer because it uses larger muscle groups and provides better control

    Pushing a cart is generally preferred because it allows use of larger back and leg muscles, provides better visibility, and reduces shoulder strain.