The structure of the mammalian heart

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Across
  1. 4. Artery Branch of the pulmonary artery that transports blood to the right lung.
  2. 5. Chamber that receives deoxygenated blood from the body.
  3. 8. Receive blood veins and pump it into the ventricles
  4. 10. A specialized tissue found only in the heart, is able to initiate its own electrical impulses
  5. 15. Artery that carries deoxygenated blood from the heart to the lungs.
  6. 16. Chamber that pumps deoxygenated blood to the lungs.
  7. 17. Largest veins in the body, responsible for returning deoxygenated blood to the heart.
  8. 18. Receive blood from atria and pump it into the arteries
  9. 21. Valve that prevents the backflow of blood from the pulmonary artery into the right ventricle.
  10. 22. Prevent blood from flowing from the arteries back into the ventricles
Down
  1. 1. Separates the left and right sides of the heart
  2. 2. Chamber that receives oxygenated blood from the lungs.
  3. 3. Valve that prevents the backflow of blood from the right ventricle to the right atrium.
  4. 6. Valve that prevents the backflow of blood from the aorta into the left ventricle.
  5. 7. Prevent blood from flowing from the ventricles back into the atria
  6. 9. Tiny air sacs in the lungs where gas exchange occurs.
  7. 11. Supply the cardiac tissue with blood
  8. 12. Chamber that pumps oxygenated blood into the aorta.
  9. 13. Largest artery in the body, distributing oxygenated blood to the body.
  10. 14. Valve that prevents the backflow of blood from the left ventricle into the left atrium.
  11. 19. Vein that carries oxygenated blood from the lungs to the heart.
  12. 20. Artery Branch of the pulmonary artery that transports blood to the left lung.