Across
- 5. Np (9)
- 7. The brain releases this due to stimulation (8)
- 10. They let you see! (4)
- 12. The largest organ (4)
- 13. Contrary to popular belief, not spooky or scary, nor send shivers down spines (8)
- 14. Makes up everything (4)
- 15. Classification for multicellular lifeforms (7)
- 16. By nature, not choice or area (8)
Down
- 1. Body's building blocks (4)
- 2. A powerhouse, also the only thing most remember (12)
- 3. Conductor of tests (9)
- 4. Opposites attract? (9)
- 6. Solid, liquid or gas (9)
- 8. Tissue that allows movement (6)
- 9. Pumps blood, and visually mistaken by valentines cards (5)
- 11. Tool for sighting the miniscule (10)