1. 1. What have we learned about? 2. Let us compare these objects.
Plant Cell
1 m
Virus
3 m
Bacteria
100
10 m
Animal
Cell

2. Animal Body Systems Systems Organs Tissues Cells
Cells: Structure and Function
What do they look like?
What do they do?

3. Cells: Structure and Function
Carrying oxygen
Thinking
Digesting food
Contracting to move body parts
Giving shape to the body
blood cells
brain cells
stomach cells
muscle cells
bone cells

4. Tissues: Structure and Function
Covers and Lines
Epithelial Tissue
Binds and Supports
Connective Tissue
Functions in movement
Muscle Tissue
Forms a communication network
Nervous Tissue

5. Organs (Many Tissues) Structure and Function
Heart
Muscle Tissue pumps blood
Epithelial Tissue lines the heart chambers.
Connective tissue make the heart elastic.
Neural Tissue regulates contraction

6. Organs: Composed of Many Tissues Structure and Function
Stomach
Muscle Tissue digests food
Epithelial Tissue secretes enzymes
Nervous Tissue communicates person of hunger

7. Systems: Structure and Function
System that …
Gives shape, protects its organs and allows movement.
Muscular/skeletal
Makes more of itself or has babies
Reproductive System
Gets rid of wastes after it uses energy to do its work. In humans kidneys and skin do this job
Excretory System
Breaks down the food taken into body: In humans, it includes the mouth, stomach and intestines
Digestive system