1. Muscles of the human body
The Muscular System
Muscles of the human body

2. Learning Goal:
Describe the structure and function of the muscle system of the human body
ISN 62-63

3. Learning scale: (where are you?)ISN 62-63
1. Define Week 30 vocabulary.
2.Describe involuntary and voluntary muscles.
3. Compare and contrast the function of muscles and their structure
4. Analyze ways to keep muscles healthy and describe at least one disease of the muscles.

4. Involuntary muscles do not have to think about these muscles.
act on their own.

5. Involuntary muscles:
1. Smooth Muscles: work in the stomach and intestines for digestion
Reacts slowly and tires slowly

6. Involuntary muscles cont’d
2. Cardiac Muscles: muscles found only in the heart
striated (banded)
Do not tire
Contracts repeatedly in a heartbeat

7. Voluntary Muscles Skeletal muscles: banded or striated tire quickly
Attach to and cover the skeleton

8. Voluntary muscles
Muscles: -work in pairs -can only contract (cannot lengthen) -while one muscle contracts the other relaxes -tendons attach muscles to bones

9. Types of muscle fibers (cells)

10. Muscular Dystrophy 30+ inherited diseases Gradually weaken muscles
Muscle loss occurs
Limits movement
Some onset in childhood