Unit 5 EXAM: Muscular System - 24-25

Front

What are the main functions of the muscular system?

Back

1. Movement 2. Support 3. Heat production 4. Posture maintenance

Front

Which muscle is responsible for flexing the head and rotating it toward the opposite side?

Back

Sternocleidomastoid

Front

What is Myasthenia gravis?

Back

A neuromuscular autoimmune disease that causes muscle weakness and immobilization due to lack of nervous input.

Front

What is the prime mover muscle during leg flexion?

Back

Hamstring

Front

Identify the muscle that is primarily responsible for arm flexion at the elbow.

Back

Biceps Brachii

Front

What is the role of the quadriceps muscle group?

Back

To extend the leg at the knee joint.

Front

What is the function of the hamstring muscles?

Back

To flex the leg at the knee joint.

Front

What is the primary function of skeletal muscles?

Back

To facilitate voluntary movement of the body.

Front

What is the difference between voluntary and involuntary muscles?

Back

Voluntary muscles are controlled consciously (e.g., skeletal muscles), while involuntary muscles operate without conscious control (e.g., cardiac and smooth muscles).

Front

What is the significance of muscle tone?

Back

Muscle tone refers to the continuous and passive partial contraction of the muscles, which helps maintain posture and readiness for action.