Circulatory System

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Across
  1. 4. Organ that fills with oxygen and gives off carbon dioxide
  2. 5. Main artery of the heart carrying oxygen rich blood to the body
  3. 8. Bottom 2 chambers of the heart
  4. 9. Control the flow of blood through the heart by opening and closing during contractions
  5. 10. Large vein carrying oxygen poor blood back to the heart
  6. 11. Muscular organ about the size of a fist, pumps blood throughout the circulatory system
Down
  1. 1. tiny blood vessels connecting the arteries and veins
  2. 2. carry oxygen and nutrients away from the heart to the body
  3. 3. Returns blood to the heart from the lower body
  4. 5. Top 2 chambers of the heart
  5. 6. Returns blood to the heart fro the upper body
  6. 7. Carry carbon dioxide and waste towards the heart