Across
- 4. A blood vessel that carries blood back to the heart.
- 6. The muscular organ that pumps blood throughout the body.
- 8. Tiny blood vessels where oxygen and nutrients are exchanged with tissues.
- 10. Cells in the blood that carry oxygen.
Down
- 1. Gas carried by blood that is essential for cellular respiration.
- 2. The rhythmic throbbing of the arteries caused by the heart beating.
- 3. The liquid part of blood that carries cells and nutrients.
- 4. One of the lower chambers of the heart that pumps blood out.
- 5. A blood vessel that carries blood away from the heart.
- 7. The fluid that carries cells and nutrients throughout the body.
- 9. A structure in the heart that prevents blood from flowing backward.
- 11. The movement of blood through the heart and blood vessels.