Which system is responsible for supporting body posture and movement?

• A. Integumentary system
• B. Muscular system
• C. Nervous system
• D. Cardiovascular system

Answer: (B)

The muscular system is crucial for supporting body posture and movement because it consists of the muscles that contract to produce force and allow for motion. This system includes skeletal muscles, which are attached to bones, enabling voluntary movements. When muscles contract, they pull on bones, leading to a change in body position or movement. Additionally, the muscular system works in coordination with the skeletal system to maintain posture by stabilizing joints and supporting the spine, preventing bodily collapse and maintaining an upright position.

In this context, the muscular system's role is fundamental, as it not only facilitates movements like walking, running, and jumping but also helps maintain balance and stability, which are essential for any physical activity.