Breathing and Organ System Revision

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Across
  1. 1. The mineral needed for strong bones.
  2. 3. The stiff material which makes up the wall of the trachea and bronchi.
  3. 4. The name of the liquid in the circulatory system.
  4. 6. The organ system which the uterus and ovaries in a female belong to.
  5. 12. The system which is responsible for supporting us, protecting our organs and enabling us to move.
  6. 13. The gas which makes up 78% of the air we inhale.
Down
  1. 2. The name given to two muscles which work together (i.e the tricep and the bicep)
  2. 5. The organ system which the lungs below too.
  3. 7. The organ system which the stomach is part of.
  4. 8. The blood vessels which surround the alveoli.
  5. 9. A group of cells working together to carry out a specific function in the body.
  6. 10. The basic structure of an organism.
  7. 11. The tissue which connect the muscles to our bones.