The Muscular System

1. The Muscular System

2. What are the Parts of the Muscular System? • There are three types of muscles that make up the muscular system: smooth, skeletal and cardiac muscles.

3. Smooth Muscles • Smooth muscle are involuntary muscles that make up your organs like your stomach, esophagus or diaphragm. You cannot control these types of muscles by thinking about them. Your brain automatically controls the movement of these muscles. • Smooth muscles help you throw up when you are sick. They also move food through your digestive tract.

4. Smooth Muscle Continued • Smooth muscles move your diaphragm up and down so you can breath.

5. Smooth Muscles Continued • Smooth muscle is also found in your bladder. They allow you to “hold it” until you can find a bathroom, then they contract to let urine out.

6. Skeletal Muscle • Skeletal muscles move your skeleton. They are striated which means they look striped. Skeletal muscles are voluntary muscles which means you can control their movement. These muscles work together with your skeleton to move your body. They allow you to turn your head, stand up, or kick a ball.

7. Cardiac Muscle • Cardiac muscle is the muscle that makes up your heart. • You cannot control cardiac muscle by thinking about it. • Your nervous system controls your cardiac muscle and makes it pump blood throughout your body with a regular beat. • If you had to control your own cardiac muscle by thinking about it, your heart would stop whenever you went to sleep.

8. What is the purpose of the Muscular System? • The purpose of the muscular system is to provide movement for your body. Muscles move your bones and your internal organs like your heart, stomach and diaphragm.

9. How does the Muscular System Work with other Systems? • Your muscular system works with the skeletal system to move your bones.

10. How does the Muscular System Work with other Systems? • The muscular system works with the digestive system to move food through your body.

11. How does the Muscular System Work with other Systems? • The muscular system works with the circulatory system because the heart is made of muscle and it pumps blood throughout your body. • http://www.smm.org/heart/heart/top.html

12. How does the Muscular System Work with other Systems? • The muscular system works with the respiratory system to push CO2 out of your body and pull O2 in.

13. How does the Muscular System Work with other Systems? • The muscular system works with the nervous system because your brain and nerves control the movement of all of your muscles.

14. Interesting Facts • You have more than 600 muscles in your body. • About 40% of your body weight is from muscles. • Muscles can’t push. They only pull. Your muscles work in pairs to move your bones. • To move bones they pull in opposite directions. • Your muscles in your eyes are the busiest muscles in your body. They can move more than 100,000 times a day.

15. Muscular System Quiz • What are the parts of the muscular system? • Muscles: smooth, cardiac and skeletal • What is the purpose of the muscular system? • To move your body • How does the muscular system work with other systems? • It works with the circulatory by moving the heart to pump blood, with the skeletal by moving the bones, with the respiratory by moving the diaphragm, with the digestive by moving food through the system, with the nervous because the brain controls all movement.