Question

While doing work and running, you move your organs like hands, legs etc. Which among the following is correct?

• A. Smooth muscles contract and pull the
  ligament to move the bones
• B. Smooth muscles contract and pull the
  tendons to move the bones
• C. Skeletal muscles contract and pull the
  ligament to move the bones
• D. Skeletal muscles contract and pull the tendon
  to move the bones

Answer 1

The correct option is D

Skeletal muscles contract and pull the tendon
to move the bones

The correct option is D

Explanation of the correct option:

1. Skeletal muscles are voluntary muscles because they work according to our will. Skeletal muscles are also called striped muscles because they have alternate dark and light bands.
2. A person doing work and running the skeletal muscles contract and pull the tendon for bone movement.
3. The skeletal muscles are composed of hundreds or even thousands of skeletal muscle fibers.
4. The fibers are wrapped with connective tissue and bundled together.

Explanation of the incorrect options:

Option A and Option B

1. Smooth muscles do not play any role in the movement of bones due to it is located in the visceral organs.
2. They are also called involuntary muscles

Option C

1. Skeletal muscles are always attached to bones with the help of a tough, flexible band of fibrous connective tissue that is known as tendon.
2. When skeletal muscles contract it pulls the tendon instead of the ligament.

Final answer: Skeletal muscles contract and pull the tendon to move the bones.