Across
- 1. Where bones meet
- 6. Long tube which connects to the mouth and stomach
- 9. A system that supports the body and protects organs
- 11. The term for the four sections of the heart
- 12. Cells of the same type
- 13. A system that sends and receives messages
- 14. Main organ for the nervous system
- 15. A bag made of smooth muscles that mixes food with digestive juices
- 16. Nerve cell
- 20. Main organ for the circulatory system
- 22. A system that provides nutrients to the body
- 23. Tube of nerves that runs through the backbone
Down
- 2. A kind of muscle found in the walls of the stomach
- 3. The organ where most food is digested
- 4. Your heart is the size of this body part
- 5. A system that helps move parts of the body
- 7. Helps soften food and starts the digestion process
- 8. Vessels that carry blood from the heart
- 9. A kind of skeletal muscle with light and dark stripes
- 10. Blood vessels that return blood to the heart
- 17. Groups of neurons that pass along information
- 18. A kind of muscle that makes up the walls of the heart
- 19. The main organ of the respiratory system
- 21. Tiny blood vessels that surround air sacs