| A | B |
|---|
| Tissues | A group of similar cells that work together |
| Organs | A group of similar tissues that work together |
| Cells | The basic building block of life |
| Skeletal system | Protects your organs, supports your body |
| Cardiovascular System | Transports blood and oxygen through your body |
| Respiratory System | Takes in oxygen and excretes carbon dioxide |
| Muscular System | Allows your body to move by contracting and relaxing |
| Digestive System | how your body breaks down food and gets nutrients |
| Nervous System | How your body transmits messages |
| Lungs and Heart | Main organs used in your body when you are running |
| Dehydration | Lack of water causes cells to shrink and you become ill |
| hair cell | has a pointy bottom to easily attach to things |
| sperm cell | has a thin flagellum or tail to help it move quickly |
| nerve cell | looks like a wire with claws so it can recieve messages and send them along |
| red blood cell | looks like a mini bean bag and carries oxygen |
