CEA Human Anatomy & Biomechanics 1 — Questions and Answers
Question 1: Which part of the body is most commonly associated with work-related musculoskeletal disorders?
- Wrists
- Lower back (Correct answer)
- Knees
- Neck
Correct answer: Lower back
The lower back is one of the most common areas affected by work-related musculoskeletal disorders due to poor posture and repetitive lifting.
Question 2: What is the function of tendons in the musculoskeletal system?
- Connect bones to bones
- Provide cushioning for joints
- Connect muscles to bones (Correct answer)
- Produce red blood cells
Correct answer: Connect muscles to bones
Tendons connect muscles to bones and transmit the force needed for movement.
Question 3: What biomechanical principle explains the stress placed on joints during repetitive motion?
- Isometric tension
- Cumulative trauma (Correct answer)
- Reciprocal inhibition
- Dynamic overload
Correct answer: Cumulative trauma
Cumulative trauma refers to repeated stress and strain on joints and tissues over time, leading to injuries.
Question 4: Which joint type allows for the greatest range of motion?
- Hinge joint
- Ball-and-socket joint (Correct answer)
- Gliding joint
- Pivot joint
Correct answer: Ball-and-socket joint
Ball-and-socket joints like the shoulder and hip allow for the widest range of movement in multiple directions.
Question 5: Why is neutral posture important in ergonomic design?
- Increases productivity
- Eliminates all strain
- Enhances blood circulation
- Minimizes strain on the musculoskeletal system (Correct answer)
Correct answer: Minimizes strain on the musculoskeletal system
Neutral posture reduces stress on muscles and joints, minimizing the risk of injury during prolonged tasks.
Question 6: Which muscle group is primarily responsible for maintaining upright posture?
- Deltoids
- Hamstrings
- Core muscles (Correct answer)
- Biceps
Correct answer: Core muscles
The core muscles, including the abdominals and spinal extensors, stabilize the spine and support upright posture.
CEA Human Anatomy & Biomechanics 1
Which part of the body is most commonly associated with work-related musculoskeletal disorders?