1. INTRODUCTION TO HUMAN BIOLOGY pp. 907-910

2. cells  tissues organs  organ systems

3. BODY TISSUES

4. muscle: contract in coordination upon stimulation (skeletal, cardiac, smooth)
nervous: receive and transmit information and signals (made of cells called neurons)
epithelial: line surfaces of bodies, cavities, canals
connective
1. bone, cartilage, tendons, blood
2. cells surrounded by extra-cellular, non-
living tissue

5. ORGANS
tissues working together

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

7. Circulatory: transport of gases, nutrients, waste, and chemicals to all parts of the body.
Respiratory: gas exchange

8. Integumentary (skin): protection
Immune: fights pathogens

9. Nervous: regulation, conduction, and coordination
Endocrine: controls body function via chemical messengers.

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

11. Reproductive: production of sex cells (offspring)

12. BODY CAVITIES
spinal, cranial, thoracic, diaphragm, abdominal, pelvic

13. Feedback Loops Positive (Rarer)
The response of the system creates more of the same response
Run on the Bank, Allergic Reaction, Awful sound from a speaker
There is a rumor that a bank is going out of business. People get scared and start going to the bank to take out their money. People see that the bank is getting weak because of all the people taking out their money so they go to take their money. This happens more and more until the bank has no more money and goes out of business.

14. Negative Feed back
The response of the system causes the action to stop
Thermostat, Insulin
When you set your thermostat to heat it turns the heat on and then the room heats up. When the room reaches a certain temperature, the thermostat reacts and turns off the heater. The room then cools down and the cycle reapeats.

15. Homework
Read p
Problems p 910 #1-6
Body Tissues Worksheets