Circulatory, Respirtory, digestive systems

123456789101112131415161718192021
Across
  1. 1. fatty substance found in the blood
  2. 2. vessels that carry blood toward the heart
  3. 3. blood cells that help fight disease
  4. 6. blood components that help form clots
  5. 9. another name for the circulatory system
  6. 11. rhythmic beat caused by the heart pumping blood
  7. 13. process of adding oxygen to the blood
  8. 15. lower chamber of the heart
  9. 20. movement of blood throughout the body
  10. 21. muscular organ that pumps blood
Down
  1. 1. smallest blood vessels in the body
  2. 4. structures that prevent blood from flowing backward
  3. 5. protein that carries oxygen in red blood cells
  4. 7. upper chamber of the heart
  5. 8. liquid part of the blood
  6. 10. gas transported from the lungs to body cells
  7. 12. largest artery in the human body
  8. 14. blood cells that transport oxygen
  9. 16. waste gas transported from cells to the lungs
  10. 17. vessels that carry blood away from the heart
  11. 18. thickened blood that helps stop bleeding
  12. 19. tissue that transports substances around the body