1. Body Organization and Structure

2. HOMEOSTASIS
If homeostasis is interrupted, cells suffer and sometimes die.
The human body’s maintenance of a stable internal environment.

3. THE WORK OF CELLS
Cells have their own positions (or jobs) in the body!

4. RED BLOOD CELLS

5. Groups of cells working together form a TISSUE
There are 4 types of tissues:
Epithelial Tissue
Nervous Tissue
Muscle Tissue
Connective Tissue

6. EPITHELIAL TISSUE
Covers and protects underlying tissue. When you look at the surface of your skin, you see epithelial tissue

7. NERVOUS TISSUE
Sends electrical signals through the body. It is found in the brain, nerves and sense organs.

8. MUSCLE TISSUE
Made up of cells that can contract and relax to produce movement

9. CONNECTIVE TISSUE
Joins, supports, protects, insulates, nourishes, and cushions organs. It also keeps organs from falling apart.

10. TISSUE + TISSUE= ORGAN
Two or more tissues working together, form an organ.
One type of tissue alone cannot do all of the things that several types working together can do.

11. ORGAN + ORGAN = ORGAN SYSTEM
Organs working together
make up an organ system.
The failure of any part can affect the entire system

12. 11 MAJOR ORGAN SYSTEMS Integumentary system Muscular system
Skeletal system
Cardiovascular system
Respiratory system
Urinary system
Reproductive system.
Nervous system
Lymphatic system
Digestive system
Endocrine system

13. Integumentary System
Includes skin, hair, nails and their underlying tissues

14. Skeletal muscles move bones.
Muscular System
Skeletal muscles move bones.

15. Skeletal System
Bones frame and protect body parts.

16. Cardiovascular System
The heart pumps blood through blood vessels.

17. Respiratory System
Lungs absorb oxygen and release carbon dioxide.

18. Removes wastes from the blood and regulates body fluids.
Urinary System
Removes wastes from the blood and regulates body fluids.

19. Reproductive System
Females produces eggs, feed/shelter unborn baby- males produce sperm.

20. Receives and sends electrical messages.
Nervous System
Receives and sends electrical messages.

21. Lymphatic System
Returns leaked fluids to blood vessels and helps flush harmful germs out.

22. Digestive System
Breaks down food into nutrients.

23. Endocrine System
Glands regulate body functions by sending out chemical messages.

25. We are the sum of our parts!

26. A brief overview of the body’s systems
Please remember:
You won’t take all this in at once
Nobody does!
The homework and tests will help
Revision is a must – and you will never remember it all – but if you follow the guidance given on the Student Area you will pass the exam!