1. Homeostasis in the Multicelled Organisms pp. 907-910

2. If cells have to be so small to maintain homeostasis, then how do complicated organisms like plants and animals 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

8. BODY TISSUES

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

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

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

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

13. ORGANS
Tissues working together

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

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

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

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

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

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