Circulatory System

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Across
  1. 2. Chamber of the heart where blood returns from the circulatory system
  2. 5. Tiny air sacs in the lungs where gas is exchanged
  3. 8. Blood vessel that carries blood AWAY from the heart
  4. 9. The vena cava that brings blood back to the heart from upper body
  5. 10. Gas that is brought to working muscles
Down
  1. 1. Tiniest blood vessels where oxygen and nutrients are given to the muscles and waste is taken away
  2. 3. Prevent backward flow of blood inside the heart and veins
  3. 4. Chamber of the heart that pumps blood out to the body
  4. 5. The largest artery in the body
  5. 6. Organ of the body where oxygen is brought into the circulatory system
  6. 7. Blood vessel that carries blood back TO the heart