The Cardiovascular System.

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Across
  1. 1. Tube like structure that carries blood throughout the body. Includes veins and arteries,
  2. 5. The smallest blood vessels in the body.
  3. 8. Carry blood to the heart.
  4. 11. A machine that monitors blood oxygen levels.
  5. 12. A waxy substance that can become deadly if it builds up in the arteries.
  6. 13. One of the two main chambers of the heart.
  7. 14. Main artery of the body.
Down
  1. 2. Thin membrane that lines the inside of the chambers of the heart and the surface of the valves.
  2. 3. When cardiac muscle is destroyed. This is caused by obstruction of blood to the cardiac tissue.
  3. 4. Carry oxygenated blood away from the heart.
  4. 6. Thick wall of the muscle that separates the left and right sides of the heart.
  5. 7. Also known as white blood cells.
  6. 9. Blood proteins that target and eliminate foreign antigens and viruses.
  7. 10. One of several veins that carries blood from the face and neck to the heart.
  8. 11. Blood is composed of blood vessels and _____.