Across
- 1. flap of tissue between each chamber of the heart the keeps blood moving in the right direction
- 4. top chambers of the heart
- 5. tiny blood cell parts that form clots and scabs
- 6. bottom chambers of the heart
- 9. cells in the blood that carry oxygen throughout the body
- 10. largest vein in the body
- 11. smallest blood vessels
Down
- 2. blood veins that carry blood back to the heart
- 3. blood cells that fight infection
- 4. blood vessels that carry blood away from the heart
- 7. organ that pumps blood
- 8. fluid that carries materials around the body
- 12. largest artery in the body