Across
- 3. Allow blood to flow in one direction in the heart and control the flow of blood.
- 5. a body fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells
- 8. What the heart needs
- 9. where veins and arteries meet
- 10. take blood away from the heart
- 11. when the heart beats to slow
Down
- 1. what the arteries carry in the blood
- 2. bring blood to the heart
- 4. how much blood a human body has
- 6. the system that transports blood throughout the body
- 7. pumps blood