What are the systems that move the body?

The systems that move the body are primarily the muscular system and the skeletal system. The muscular system consists of all the muscles in the body, while the skeletal system is composed of bones and joints.

To understand how these systems work together to move the body, we can break it down into a few steps:

1. Muscles receive signals from the nervous system: Movements are initiated in the brain and transmitted as electrical signals to the muscles through the nervous system.

2. Muscles contract: When a signal is received, muscles contract, which means they shorten in length. The contraction of individual muscle fibers generates force.

3. Muscles are attached to bones: Muscles are connected to bones through tendons. When muscles contract, they pull on the tendons, which in turn pull on the bones they are attached to.

4. Joint movement: Joints act as pivot points, allowing bones to move in relation to each other. Depending on the type of joint, movements like flexion, extension, rotation, or abduction/adduction can occur.

5. Bone movement: Due to muscle contraction and joint movement, bones change their position, resulting in overall body movement.

It's important to note that muscles work in pairs or groups to create coordinated movement. For example, when you bend your elbow, the biceps muscle contracts to flex, while the triceps muscle relaxes. In this way, muscles work together to produce smooth, precise movements.

Overall, the movement of the body is a complex interplay between muscles, bones, and joints that allows us to perform a wide range of activities.

http://www.factmonster.com/ipka/A0774536.html