The Muscular System is made up of muscles that work together to carry out many jobs. A muscle is a body part that's made up of bundles of long fibers. Many muscles work with bones to help you move.
Parts of the Muscular System
There are tree types of muscles:
Cardiac Muscle makes up the walls of your heart. Cardiac muscle contracts and relaxes to help pump blood from your heart to the rest of your body.
Skeletal Muscle help you move. The work by pulling on bones.They work in pairs to move bones back and forth.
Smooth Muscle is found in the walls of your body's organs.
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