Circulatory System

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Across
  1. 3. A tough, saclike membrane surrounding the heart
  2. 4. The blood pressure in the arteries during a heart beat
  3. 6. Oxygen carrying molecule found in RBCs
  4. 9. The blood cells that fight infection
  5. 11. The part of the brain that controls heart rate
  6. 13. The machine that measures electrical impulses in the heart
  7. 14. A disease characterized by the build up of fatty materials in the coronary arteries
Down
  1. 1. The amount of blood the heart pumps each minute
  2. 2. This is the biggest artery in the body
  3. 3. These cause the ventricles to contract
  4. 5. Blood vessels that connect arteries to veins
  5. 7. Structure in the heart that divides it into 2 sides
  6. 8. The part of the blood that is made up of mostly water
  7. 10. The only veins that carry deoxygenated blood
  8. 12. The semilunar valve on the left side of the heart