Let's Exercise!

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Across
  1. 4. Systems that work together by using the diaphragm to breath in oxygen(all one word including and)
  2. 5. tiny blood vessels
  3. 6. the muscle that is in charge of pumping blood and oxygen through the veins
  4. 7. the muscle that is in charge of taking in oxygen
Down
  1. 1. The two systems that work together by using the heart to pump oxygen through the blood(all one word including and)
  2. 2. The two systems that work together by pumping oxygen through the capillaries(veins)(all one word including and)
  3. 3. the part of your body that moves blood and oxygen