Across
- 1. place where two bones meet
- 3. group of tissues that work together
- 5. small air sacs in the lungs
- 6. short tubes that carry air from the trachea to the lungs
- 8. soft tissue in the middle of bones
- 10. a group of organs that work together
- 14. bands of tissue that holds bones together
- 15. part of the brain that controls ability to learn
- 16. Smallest living part of the body
- 18. lower part of the heart
Down
- 2. tissue fibers that conect muscle to bones
- 4. small blood vessels that connect arteries to veins
- 7. part of the brain that controls how well muscles work together
- 9. Group of cells that work together
- 11. thick band of nerve cells through which messages travel the body
- 12. blood vessel that carries blood away from the heart
- 13. upper part of the heart
- 17. vessel that carries blood to the heart