Across
- 3. Large dome-shaped muscle that plays an important role in breathing.
- 6. A narrow tube that carries urine from one of the kidneys to the bladder.
- 7. The throat.
- 8. A chemical that comes from the breakdown of proteins.
- 10. The process by which wastes are removed from the body
- 13. Main organs of the respiratory system
- 16. Muscular organ that stores urine.
- 17. Hair-like projections that line the outside of cells.
- 18. Voice box.
Down
- 1. Organ that eliminates urea, excess water, and other waste materials from the body.
- 2. The windpipe.
- 4. The process by which cells break down simple food molecules to release the energy they contain.
- 5. Passages that direct air into the lungs.
- 9. Found in kidneys that removes wastes from blood and produces urine.
- 11. Folds of connective tissue that produce your voice and stretch across the opening of the larynx.
- 12. Tiny sacs of lung tissue specialized for movement of gases between air and blood.
- 14. A small tube through which urine flows from the body.
- 15. A watery fluid produced by the kidneys that contains urea.