Ava's cross word puzzle

123456789101112131415
Across
  1. 3. A process that plants go through
  2. 9. The upper Chambers of the heart
  3. 10. Small veins
  4. 11. Carry blood away from the heart
  5. 13. Regulate temperature
  6. 14. Small fragments of cells
  7. 15. Hip bone
Down
  1. 1. Carry blood back to the heart
  2. 2. The protein in red blood cells that carries oxygen
  3. 4. Longest bone in your arm
  4. 5. The liquid part of the blood
  5. 6. Blood is apart of the ___________ system
  6. 7. ____ & Socket joint
  7. 8. Lower chambers of the heart
  8. 12. On the top of your knee