1. Organization of Life
(Tissue Types)

2. Organization of Life
If a group of cells work together to perform a specific job in the body then they form tissues.
Muscle cells working together to form muscle tissue

3. Tissues: Cells working together
Epithelial: (skin) covers and protects underlying tissue.
Nervous: sends signals throughout the body

4. Tissues: Cells working together
Muscle: composed of cells that can contract and relax to produce movement
Connective: (blood, collagen) joins, supports, protects, nourishes, and cushions organs

5. Tissues

6. Organization of Life
If two or more tissues work together to perform a specific job in the body then they form an organ.
Ex.
Stomach, heart, skin
Stems, roots

7. Organization of Life
If two or more organs work together to perform a specific job in the body then they form an organ system.
Ex. Digestive system, Circulatory System, Respiratory System. (What does each of these systems do in your body?)
Respiratory- gives oxygen to cells in digestive system
Digestive- gives nutrients to cells in respiratory system

8. Organization of Life An organism is anything that can live on its own.
Unicellular: A single cell living on its own.
Ex: ameba, paramecium
Multicellular: Multiple cells that rely on each other for survival. Most of the cells in a multicellular organism cannot live outside the body.
Ex. Us

9. Tying it all Together