Across
- 3. liquid part of the blood
- 6. similar cells with a specific function
- 8. to break or crack
- 9. two respiratory organs
- 12. regular throbbing of arteries cause by heart contractions
- 13. organs that circulates blood divided into four chambers
- 14. where digestion begins
- 15. muscle in the heart
Down
- 1. blood vessels that carries blood toward the heart
- 2. framework that support the body
- 4. blood vessel that carries blood away from the heart
- 5. basic unit of life
- 7. back bone
- 10. head bone
- 11. circulates in body to sustain life