Circulatory System

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