Across
- 4. one part of the nervous system
- 6. brain, nerves, spinal cord
- 11. kidneys, bladder
- 13. heart, veins, arteries
- 14. one part of the muscular system
Down
- 1. white blood cells, lymph nodes
- 2. one part of the immune system
- 3. one organ in the cardiovascular system
- 5. lungs, trachea, diaphragm
- 7. one organ in the excretory system
- 8. one organ in the digestive system
- 9. arm and leg muscles, heart muscles
- 10. one organ in the respiratory system
- 12. stomach, intestines, esophagus