CIRCULATORY SYSTEM

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Across
  1. 3. The blood from the left atrium flows through the mitral or ___________ valve.
  2. 6. low level of oxygen
  3. 9. connect arteries to veins
  4. 12. defense against disease
  5. 13. Blood from the right atrium passes through the _______ valve.
  6. 14. Blood from the right ventricle passes through the pulmonary ______ valve.
  7. 16. carry blood toward the heart
Down
  1. 1. type of blood which main function is to carry oxygen
  2. 2. The upper two chambers of the heart
  3. 4. are proteins found in plasma. They're part of your body's natural defenses
  4. 5. the process by which red blood cells are produced.
  5. 7. protein in RBC that carries oxygen.
  6. 8. function for blood clotting
  7. 10. protein molecules found on the surface of red blood cells.
  8. 11. Muscle that divides the heart into right and left halves
  9. 15. carry blood away from the heart
  10. 16. The lower two chambers of the heart