Across
- 3. Blood vessels that carry blood away from heart (8 letters)
- 5. Upper chambers of the heart (5 letters)
- 6. Largest artery in the body (5 letters)
- 7. Liquid component of blood (6 letters)
- 8. Blood vessels that return blood to heart (5 letters)
Down
- 1. Blood cells that fight infection (5 letters)
- 2. Lower chambers of the heart (10 letters)
- 4. Tiny blood vessels for gas exchange (11 letters)