Across
- 3. Plane that divides the body into left and right portions.
- 5. Above.
- 6. The _______ system breaks down food.
- 8. Organ system that involves breathing.
- 10. Plane that divides the body into front and back portions.
- 12. In front.
- 17. These are found inside cells.
- 18. Particles that include protons, neurtrons, and electrons.
- 19. The study of the function of the human body.
Down
- 1. A form of energy that helps control rates of reactions.
- 2. Organelles are found inside of _____.
- 4. Below.
- 7. The most abundant substance in the human body.
- 9. Behind.
- 11. Plane that divides the body into upper and lower sections.
- 13. Towards the midline(middle).
- 14. The brain and spinal cord make up the ______ system.
- 15. The ___________ system consists of the heart and blood vessels.
- 16. The study of the structure of the human body.