Across
- 1. A group of organs working together for a major function.
- 2. Responsible for creating offspring and species survival.
- 4. Works with bones to allow for movement.
- 8. Filters blood and removes liquid waste to maintain water balance.
- 9. Uses glands to release hormones that regulate growth.
- 10. The body's first line of defense including skin and hair.
- 11. Identifies and destroys invading bacteria and viruses.
Down
- 1. Provides a frame for the body and protects soft organs.
- 3. Moves nutrients and oxygen to cells via the heart and blood.
- 5. Responsible for the exchange of oxygen and carbon dioxide.
- 6. The control center that sends electrical signals to the body.
- 7. Breaks down food into tiny molecules for energy.