Biology Crossword Assignment

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Across
  1. 2. The blood cell that carries oxygen.
  2. 5. For transporting NA, K and Ca.
  3. 6. The stage where the inlet valves close and outlet valves open.
  4. 9. The main and largest artery in the body.
  5. 11. The blood cell that is essential during blood clotting
  6. 12. Regulates the communication of atrial electrical activity with ventricular electrical activity.
  7. 14. Used to keep blood from going the wrong direction,
  8. 16. Phase of the cardiac cycle where the ventricles relax
  9. 17. The muscular tissue of the heart.
  10. 18. Allow the heart's conduction system to create synchronized contractions of its ventricles
  11. 19. The Light-colored liquid component of blood that makes up 55% of its volume
Down
  1. 1. Phase of the cardiac cycle where the ventricles contract.
  2. 3. Generates an electrical signal that causes the upper heart chambers to contract.
  3. 4. Protects the body from diseases and foreign entities.
  4. 7. The stage where blood enters the heart chambers.
  5. 8. The two upper cavities of a heart.
  6. 10. The thick pressurized blood vessel.
  7. 13. The two lower cavities of a heart.
  8. 14. The thin blood vessel that has valves.
  9. 15. The innermost layer of tissue that lines the heart's chambers and valves.