circulatory system

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Across
  1. 3. intestine / The place where nutrients enter the blood.
  2. 6. / The largest artery in the body.
  3. 7. / The pump in the circulatory system.
  4. 8. system / The heart, blood, and vessels.
  5. 11. / A gas that is transported in arteries from the lungs to the rest of the body via the heart.
  6. 12. / A vessel that moves blood to the heart.
  7. 13. / Blood in arteries is ____________ red because it is rich in oxygen.
Down
  1. 1. / The heart ___________ blood.
  2. 2. / The circulatory system ___________ nutrients, gases, liquids, and heat around the body.
  3. 4. / A vessel that moves blood away from the heart.
  4. 5. / A small vessel that connects veins and arteries.
  5. 8. dioxide / A waste gas that is transported in veins from the body to the lungs via the heart.
  6. 9. / The liquid in the circulatory system.
  7. 10. / The place where oxygen enters the blood and carbon dioxide leaves the blood.