1. Systems—Organs that work together to do a job
Function—job; what it does

2. Skeletal System
Gives structure
Protects organs
Locomotion (move)

3. Muscular System Integumentary System Locomotion (move)
Encloses the body and keeps contained.

4. Respiratory System
Exchange gases (oxygen in, carbon dioxide out)

5. Cellular Respiration
Every CELL uses oxygen to release energy from nutrients.
All cells in all animals do respiration.

6. Digestive System Breaks down food into nutrients
Absorbs nutrients into blood stream.

7. Circulatory System Carries blood to the body
Brings nutrients & oxygen to cells
Carries away wastes & carbon dioxide

8. Nervous System
Senses stimuli in the environment
Reacts to stimuli

9. Reproductive System
Produce more of one’s kind—continue population.

10. Excretory System Gets rid of wastes. Immune System
Fights off diseases.

11. Endocrine System Chemical control of body with chemicals
called HORMONES.

12. Dynamic Equilibrium
Systems constantly change and adjust keep the body healthy and balanced.