Circulatory System

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Across
  1. 2. Contains oxygen
  2. 4. Two upper chambers of the heart
  3. 9. Microscopic vessels that connect veins and arteries
  4. 11. Blood vessels that carry blood away from the heart
  5. 12. White blood cells- Help the body fight infection and disease
  6. 13. Contains little or no oxygen
  7. 17. A cell fragment that aids in clotting blood
  8. 18. Blood vessels that carry blood toward the heart
Down
  1. 1. A flap of tissue in the heart or vein that prevents blood from flowing backwards
  2. 3. Clogging, narrowing, and hardening of the bodies largest arteries and blood vessels
  3. 5. Largest blood vessel, Artery, in the body
  4. 6. Lower chambers of the heart
  5. 7. Organ that pumps blood throughout the body
  6. 8. Thick wall of tissue that separates the heart into the left and right side
  7. 10. Fluid lost by the blood into the surrounding tissue
  8. 14. Red Blood Cells, carry oxygen from the lungs to the body cells
  9. 15. Deposit of fatty material on the inner linning of an arterial wall
  10. 16. Waves of changing blood pressure that tells you how fast your heart is beating