Office Ergonomics & Computer Use Flashcards
7 cards from real CEA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Office Ergonomics & Computer Use flashcards as text
An ergonomist conducting a workstation audit uses the Rapid Upper Limb Assessment (RULA). What does RULA primarily evaluate?
Answer: Posture of the upper body, muscle use, and force loads
RULA assesses upper limb posture (neck, trunk, upper arm, lower arm, wrist), muscle use, and force to score musculoskeletal risk.
When recommending a vertical (handshake-grip) mouse, the primary biomechanical benefit is:
Answer: Reduced forearm pronation by orienting the hand in a more neutral position
A vertical mouse positions the forearm in a handshake orientation, minimizing pronation and the associated loading on the pronator teres and forearm tendons.
Which administrative control is most effective at reducing cumulative trauma disorders in a heavy-keying job?
Answer: Job rotation to distribute loading across different muscle groups
Job rotation transfers repetitive-task exposure across workers or tasks, preventing the cumulative loading of the same muscles and tendons.
A worker who uses screen-reading assistive technology is being assessed. Which ergonomic consideration is uniquely important for this user?
Answer: Audio environment and headset fit to prevent neck strain and hearing issues
Screen-reader users rely on audio output, making headset ergonomics and the acoustic environment critical to prevent hearing fatigue and musculoskeletal strain from headset use.
According to ergonomic standards, the recommended ambient illuminance level for computer workstations is approximately:
Answer: 200–500 lux
General office lighting for computer tasks is recommended at 200–500 lux to balance task visibility without creating excessive contrast with the screen.
A worker reports tingling in the ring and little fingers after extended mouse use. Which nerve is most likely involved?
Answer: Ulnar nerve
The ulnar nerve supplies sensation to the ring and little fingers; compression at the wrist or elbow during mouse use can produce tingling in this distribution.
Which workstation modification best accommodates a worker who alternates between seated and standing positions throughout the day?
Answer: A height-adjustable (sit-stand) desk with corresponding monitor arm
A height-adjustable desk combined with a monitor arm allows quick transitions between sitting and standing while maintaining proper screen height and keyboard position at both postures.