Circulatory System

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