Across
- 4. These tubes carry fresh, oxygen-rich blood away from the heart
- 5. These hard structures provide a frame for your body
- 7. The largest organ and a physical barrier to protect you from pathogens
- 8. Little chemical messengers that tell the body on how to react
Down
- 1. Bean-shaped organs that help filter waste out of your blood
- 2. The CPU that processes all your thoughts
- 3. The long tube where the body soaks up nutrients from food
- 6. The specialized muscle only found in the heart