Across
- 3. watery fluid in blood with no cells
- 7. Enlarged veins near the surface of the skin
- 9. an upper chamber on the side of the heart
- 11. act of moving around
- 13. blood vessel that moves blood from the heart
Down
- 1. The two large veins which enter your heart
- 2. having to do with the lungs
- 4. flap which prevents blood backflow in the heart; doorlike flap
- 5. membranous tube carrying blood to the heart
- 6. lower chamber of the heart
- 8. Muscle the size of your fist between the lungs; the heart
- 10. the main vessel of the body's arteries
- 12. tiny blood vessel, neither an artery nor vein