1. Topic 4: Multicellular Organisms

2. Cells Basic building block of life
What happens when we put cells together?

3. Tissues Groups of similar cells that function together
Animals – 4 types
Connective
Supports and connects different parts of the body
Blood, cartilage, bones

4. 2. Epithelial
Covers the surface of organs and body
3. Nervous
Sends signals throughout your body
4. Muscle
Enables movement

5. Plants
1. Photosynthetic
Sugar is produced & stored
2. Protective
3. Transport
Xylem
Water
Phloem
Food

6. Organ
Groups of tissues that work together to do a specific function
Groups of organs that work together to do a certain function
Organ Systems

7. 1. Respiratory system
Key function
Exchange gases
Oxygen from air to blood
Carbon dioxide from blood to air

8. Break down food into smaller pieces
2. Digestive system
Key functions
Break down food into smaller pieces
Absorb nutrients

9. Transport substances throughout the body
3. Circulatory system
Key functions
Transport substances throughout the body
Defend the body
Connect all organ systems

10. Remove wastes from the blood
4. Excretory system
Key functions
Remove wastes from the blood
Expel wastes from the body

11. 5. Nervous system
Key functions
Send signals in reaction to stimuli

12. Organ systems REACT and INTERACT
They react to changes in the outside world
They rely on each other for survival