Ergonomics & Musculoskeletal Disorders Flashcards
7 cards from real SHS 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 & Musculoskeletal Disorders flashcards as text
What is ergonomics primarily concerned with?
Answer: Fitting the work environment to the worker to reduce injury risk
Ergonomics focuses on designing work systems, tools, and environments that fit the worker's capabilities and limitations to minimize injury and improve efficiency.
Which of the following is a primary risk factor for work-related musculoskeletal disorders (WMSDs)?
Answer: Repetitive motion performed over extended periods
Repetitive motion is a primary ergonomic risk factor that causes cumulative stress on muscles, tendons, and nerves, leading to WMSDs.
According to the Revised NIOSH Lifting Equation, which variable is used to evaluate the horizontal distance of a load from the worker's body?
Answer: Horizontal distance from the load to the worker's body
The horizontal distance from the worker's body to the load is a critical variable in the NIOSH Lifting Equation, as greater horizontal distance increases spinal stress.
What term describes the joint position where the least stress is placed on tendons, muscles, and nerves?
Answer: Neutral posture
Neutral posture is the position where joints are naturally aligned, minimizing stress on muscles, tendons, and nerves.
Which of the following best describes 'contact stress' as an ergonomic risk factor?
Answer: Pressure on soft tissue from a hard or sharp surface edge
Contact stress occurs when body parts press against hard or sharp surfaces, compressing tissues and potentially restricting blood flow or nerve function.
Tendinitis is best classified as which type of injury?
Answer: Cumulative trauma disorder
Tendinitis is a cumulative trauma disorder caused by repeated microtrauma to tendon tissue over time, resulting in inflammation.
Which workstation modification would BEST reduce lower back strain for sedentary workers?
Answer: Using a chair with lumbar support adjusted to maintain the spine's natural curve
A chair with proper lumbar support maintains the lumbar spine's natural lordotic curve, reducing stress on spinal discs and muscles.