CEA Musculoskeletal Disorder Prevention 2

Question 1

Which of the following best describes the 'dose-response relationship' in MSD risk assessment?

Accepted Answer

Greater exposure to a risk factor increases the likelihood of developing an MSD

Answer

The dose-response relationship means that as exposure to ergonomic risk factors (force, repetition, awkward posture) increases, the probability and severity of MSDs increase.

Question 2

A warehouse worker reports tingling and numbness in the thumb, index, and middle fingers that worsens at night. Which MSD is most consistent with these symptoms?

Accepted Answer

Carpal tunnel syndrome

Answer

Carpal tunnel syndrome compresses the median nerve, causing tingling and numbness in the thumb, index, and middle fingers, often worse at night.

Question 3

Which administrative control is MOST effective at reducing MSD risk from highly repetitive tasks?

Accepted Answer

Implementing job rotation among tasks with different muscle group demands

Answer

Job rotation among tasks that use different muscle groups reduces cumulative loading on any single tissue, lowering MSD risk.

Question 4

The concept of 'tissue tolerance' in ergonomics refers to:

Accepted Answer

The maximum load a biological tissue can sustain before damage occurs

Answer

Tissue tolerance is the threshold load beyond which musculoskeletal tissues (tendons, muscles, discs) sustain micro-damage that can accumulate into an MSD.

Question 5

In the NIOSH lifting equation, what does the 'Asymmetry Multiplier (AM)' account for?

Accepted Answer

Twisting of the torso away from the sagittal plane during lifting

Answer

The Asymmetry Multiplier penalizes lifting tasks that require trunk rotation, as twisting significantly increases spinal loading and disc injury risk.

(CEA) Certified Ergonomics Associate Practice Test

(CEA) Certified Ergonomics Associate Practice Test

CEA Musculoskeletal Disorder Prevention 2