1. INTRODUCTION TO HUMAN BIOLOGY pp. 907-910

2. If cells have to be so small to maintain homeostasis, then how does the human body survive?

4. HOMEOSTASIS
Homeostasis in the human body is maintaining a stable internal environment
Cells of the same type work together to do a specific job maintain homeostasis
EX. Osmosis in an individual cell versus your kidneys to remove excess water from your blood to make urine

5. Levels of Organization
Cells  tissues organs  organ systems

6. BODY TISSUES

7. Muscle: contract in coordination upon stimulation (skeletal, cardiac, smooth)

8. Nervous: receive and transmit information and signals (made of cells called neurons)

9. Epithelial: line surfaces of bodies, cavities, canals

10. Connective: cells surrounded by extra- cellular, non-living tissue called a matrix (bone, cartilage, tendons, blood)

11. ORGANS
Tissues working together

12. BODY CAVITIES Spinal, cranial, thoracic, diaphragm, abdominal, pelvic
Know the locations in your body

13. ORGAN SYSTEMS Skeletal: protection and support
Muscular: support and movement
Skeletal: protection and support

14. Circulatory: transport of gases, nutrients, waste, and chemicals throughout body
Respiratory: Gas exchange

15. Endocrine: controls body function via chemical messengers.
Nervous: regulates body via impulses

16. Digestive: breakdown and absorption of food
Excretory: removal of liquid and solid wastes

17. Reproductive: production of sex cells to make offspring
Immune: Fights pathogens and disease