Body systems Sarah

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Across
  1. 4. blood vessels that carry blood away from the heart
  2. 6. when a sperm cell joins an egg cell
  3. 8. tissue that attach your muscles to your bones
  4. 10. another word for your large intestine
  5. 12. where carbon dioxide is exchanged with oxygen in the lungs
  6. 13. a group of cells that secrets a substance
  7. 14. a soft tissue inside your bones
  8. 16. removing wastes from your body
  9. 17. the opening where air enters your lungs
  10. 19. where your bones meet
  11. 20. an organ that help maintain the level of water and salt in your body
Down
  1. 1. changing food into material your body needs
  2. 2. blood vessels that bring blood back to your heart
  3. 3. where blood is pumped from to other places in the body
  4. 5. blood vessels that connect veins and arteries to the cells in your body
  5. 7. the exchange of the gases in your body and the gases in the air
  6. 9. all the bones in your body
  7. 11. where oxygen is transferred to the blood and carbon dioxide is removed from the blood
  8. 15. nerve cells
  9. 18. a fluid your mouth produces