Across
- 4. The circulatory system transports ________________, water, and oxygen to the cells.
- 7. The circulatory system carries this away from the body. An example of this is carbon dioxide.
- 8. upper chambers of the heart
- 11. when the blood enters the heart twice
Down
- 1. carries oxygenated blood
- 2. main artery of the body
- 3. system make up the vessels that control the flow of blood around the body
- 5. lower chambers of the heart
- 6. hollow muscular organ made of strong cardiac muscles.
- 9. carries deoxygenated blood
- 10. another word for a heart