Across
- 1. System that releases and controls hormones
- 5. Groups of cells working together
- 6. A living thing
- 9. System that carries blood around the body
- 11. Regulatory substances to stimulate cells or tissues into action
- 12. The brain of a cell
- 14. System providing structure and safety to our vital organs and muscular system
- 15. System in which we reproduce
Down
- 2. System that digests food
- 3. Group of tissue working together
- 4. The building blocks of life
- 7. System that sends nerve impulses throughout the body to control and warn it
- 8. Network of cells, tissues, and organs built to fight infections and diseases
- 10. System that removes waste from the body
- 13. Systems of tissues to flex and strech to perform basic functions and help move