Across
- 4. The liquid part of blood that carries blood cells and nutrients.
- 5. A gas your body needs to produce energy.
- 7. A liquid that carries oxygen, nutrients, and waste products in the body.
- 9. A strong muscle that pumps blood throughout the body.
- 12. A flap inside the heart that keeps blood flowing in one direction.
- 15. The body system that moves blood through the body to deliver oxygen and nutrients.
- 17. Blood cells that fight infection.
- 18. Tiny blood vessels where oxygen and nutrients move from the blood into body cells.
Down
- 1. The continuous movement of blood through the heart and blood vessels.
- 2. A waste gas your body makes that you breathe out.
- 3. The feeling of blood pushing through arteries each time the heart beats.
- 6. One of the two lower chambers of the heart.
- 8. Blood cells that help stop bleeding by forming clots.
- 10. Blood cells that carry oxygen.
- 11. Blood vessels that carry blood away from the heart.
- 13. Blood vessels that carry blood back to the heart.
- 14. One of the two upper chambers of the heart.
- 16. The force of blood pushing against the walls of blood vessels.