Across
- 2. Tiny blood vessels connecting the arteries and veins
- 3. vessel that carries oxygen and nutrients away from the heart to the body
- 5. Muscular organ about the size of a fist, pumps
- 9. Organs that fills with oxygen and dispels carbon
- 10. Returns blood to the heart from the lower body
- 12. Controls the flow of blood through the heart by
Down
- 1. Returns blood to the heart from the upper body
- 4. Carry carbon dioxide and waste towards the heart
- 6. Top two chambers of the heart
- 7. throughout the circulatory system
- 8. and closing during contractions
- 11. Main artery of the heart carrying oxygenated blood to the body
- 12. Bottom two chambers of the heart