1. Muscles of the Body

2. Voluntary Muscles Muscles that we can control Skeletal Muscles (like…)

3. Involuntary Muscles Muscles that we cannot control (like…)

4. Skeletal Muscles Muscles that are attached to bone These muscles are involuntary or voluntary.

5. Striations Striping (Stripe-ing) found in cardiac and skeletal muscles

6. Smooth Muscle Involuntary muscles that we cannot control Do not have striations

7. Cardiac Muscle Muscles of the heart Have striations Can you control these?

8. Tendon Connective tissue that holds muscle to other muscles and bone

9. Muscle Action Contraction (shortening and thickening) of a muscle when it works Always work in pairs

10. Muscle Contraction When a muscle pulls and becomes short and bulged.

11. Muscle Tone The ability the muscle has to contract Can you see striations??

12. Muscle Relaxation As a muscle relaxes, the muscle lengthens and becomes thinner Remember to stretch before physical activity!

13. Fatigue (Fa ‘teeg) Build-up of lactic acid in a muscle Leads to muscle cramps