Across
- 2. in blood but looks like water
- 4. part of blood that has the most nutrients
- 8. is the most muscular part of the heart
- 9. fill up the heart
- 10. the security guards of blood
- 11. the only gas in blood cells
Down
- 1. tinniest blood vessels ever
- 3. without this organ lower body parts wouldn't get blood
- 5. the one way tap found in veins
- 6. where blood reaches first in the heart
- 7. the only cells with oxygen
- 9. they empty the heart