1. The Muscular System

2. How Do Muscles Change as You Move? Sit in a chair with your feet on the floor.Sit in a chair with your feet on the floor. Place your hand around your leg. Straighten one leg as shown in the photograph.Place your hand around your leg. Straighten one leg as shown in the photograph. Repeat step 2 several times.Repeat step 2 several times. What do you think?  How did your muscles change during the activity?  Record your observations.  What questions do you have about the muscular system?

3. Essential Question: What are the functions of the muscular system?

4. The Muscular System

5. Functions of the Muscular System: Allows our body to move Keeps the body temperature stable Maintains posture

6. Muscles are the organs that make up your muscular system. Voluntary muscles - you can control Involuntary muscles - you do not have to think about them (they move automatically)

7. Muscular System Cartoon

8. There are 3 types of muscles: 1. 1.Skeletal muscles - voluntary muscles that are attached to bones and provide the force needed to move your bones Tendons connect skeletal muscles to bones

9. 2. 2.Smooth muscles - involuntary muscles that control many types of movement in the body (such as digestion) 3. 3.Cardiac muscles - involuntary muscle that forms the heart

10. 3 Types of Muscles