Muscular System
- The Muscular System is the organ system whose primary function is movement and flexibility.
- The three types of muscles are skeletal, cardiac, and smooth.
- The skeletal muscle is attached to your bones for movement and protects your inner organs.
- The cardiac muscle is founded in only your heart that pumps blood around the body.
- The smooth muscle is found in the digestive tract and in the walls of blood vessels that moves food through the Digestive System.
- When you want to move, signals travel from your brain to your skeletal muscle cells and they contact.
- Strands of tough connective tissue called tendons connect your skeletal muscle to your bones.
- Tendons help pull the bones closer when the they contract.
- The muscles weaken when they are not exercised.
- The muscles get stronger and bigger when they are exercised.