CROSSWORD

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Across
  1. 3. A type of blood vessel that carries deoxygenated blood from the heart to the lungs
  2. 5. These components of blood are part of the immune system and defend the body against infection
  3. 7. The protein in red blood cells that transports oxygen
  4. 9. The largest artery in the body, which carries oxygenated blood out of the left ventricle
  5. 10. A blood vessel that carries deoxygenated blood back to the heart
  6. 11. The continuous movement of blood through the body
  7. 12. A type of blood vessel that carries oxygenated blood from the lungs back to the heart
Down
  1. 1. the main organ of the circulatory system that pumps blood throughout the body
  2. 2. The liquid component of blood, consisting mainly of water, in which red and white blood cells are suspended
  3. 3. Small, disk-shaped cells without a nucleus that are involved in blood clotting
  4. 4. These cells are responsible for transporting oxygen in the blood
  5. 6. The smallest blood vessels, which form networks where the exchange of materials between blood and tissues occurs
  6. 8. A blood vessel that carries oxygenated blood away from the heart to the rest of the body