Ch. 19 & 20 Vocabulary Crossword Puzzle

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Across
  1. 1. red blood cells
  2. 2. thin, strong connective tissue strings that attach papillary muscles to the ventricles
  3. 4. platelets
  4. 7. thick muscular section that separates the two ventricles
  5. 11. vessel that carries blood away from the heart
  6. 13. Rounded tip of the heart directed anteriorly and slightly inferiorly
  7. 14. opening between the right and left atria in an embryo and a fetus
  8. 15. Serous membrane covering the surface of the heart. Also called the visceral pericardium
  9. 17. Flat portion of the heart directed posteriorly and superiorly
  10. 18. Vein that returns blood from the head and neck, upper limbs and thorax to the right atrium
  11. 21. blood clotting
  12. 23. process whereby a small balloon is inflated in the aorta to increase blood flow
  13. 24. atrioventricular valve between the right atrium and the right ventricle
  14. 26. large artery that carries blood from the left ventricle of the heart and passes through the thorax and abdomen
  15. 27. Two upper chambers of the heart into which veins carry blood
  16. 28. white blood cells
  17. 30. short trunk that receives most of the veins of the heart and empties into the right atrium
  18. 31. atrioventricular valve between the left atrium and the left ventricle
  19. 32. Thick middle layer of the heart, composed of cardiac muscle cells and is responsible for the ability of the heart to contract
Down
  1. 1. Graphic record of the heart's electric currents
  2. 3. separates the two atria
  3. 5. liquid part of blood
  4. 6. Vein that returns blood from the lower limbs and the greater part of the pelvic and abdominal organs to the right atrium
  5. 8. Two lower chambers on the heart that pump blood into the arteries
  6. 9. large muscular ridges and columns found in the interior walls of the ventricles
  7. 10. Small pouch projecting from the superior, anterior portion of each atrium of the heart
  8. 12. the reason blood is red is because of this component
  9. 16. separates the atria from the ventricles
  10. 19. vessel that carries blood to the heart
  11. 20. slight oval depression on the right side of the septum
  12. 22. Innermost layer of the heart
  13. 25. Membrane covering the heart
  14. 29. Body region where the heart can be found