Heart Anatomy and Structure

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Across
  1. 3. Wall dividing right and left atria.
  2. 5. Inflammation of the heart muscle (myocardium).
  3. 6. Inner layer of serous pericardium that adheres to heart surface.
  4. 7. Outer layer of serous pericardium that lines fibrous pericardium.
  5. 9. Fibrous cords connecting valve cusps to papillary muscles.
  6. 10. Another name for the visceral pericardium.
  7. 11. Groove separating atria from ventricles externally.
  8. 16. Pouch-like extension of atria increasing volume capacity.
  9. 19. Fetal opening between atria that bypasses lungs.
  10. 20. Muscular ridges in the atrial wall.
  11. 22. Flap of a heart valve.
  12. 24. The two inferior chambers of the heart that pump blood out.
  13. 25. Pumps blood into the pulmonary trunk for gas exchange in lungs.
  14. 28. The two superior chambers of the heart.
  15. 29. Connective tissue framework of the heart.
  16. 31. Muscular layer of the heart wall responsible for contraction.
  17. 33. Muscles anchoring chordae tendineae in the ventricles.
  18. 35. Broad superior portion of the heart where major vessels emerge.
  19. 36. Tip of the heart pointing toward the left hip.
  20. 37. Chamber that receives oxygenated blood from the pulmonary veins.
  21. 38. Double-walled sac enclosing the heart.
  22. 39. Valve between atrium and ventricle on each side.
Down
  1. 1. Muscular organ that pumps blood through the circulatory system.
  2. 2. Wall separating the two ventricles.
  3. 4. Another term for the bicuspid valve.
  4. 8. Space within the pericardial sac containing lubricating fluid for heart movement.
  5. 12. Chamber that receives deoxygenated blood from the systemic veins.
  6. 13. Groove marking the boundary between the two ventricles.
  7. 14. Contractile cells that form the myocardium.
  8. 15. Outer layer of pericardium made of tough connective tissue.
  9. 17. Pumps blood into the aorta for systemic circulation.
  10. 18. Depression in interatrial septum marking fetal foramen ovale.
  11. 21. Smooth inner lining of the heart chambers.
  12. 23. Muscular ridges lining ventricular walls.
  13. 26. AV valve between right atrium and right ventricle.
  14. 27. Inner serous membrane of pericardium producing pericardial fluid.
  15. 30. Simple squamous epithelium lining heart and blood vessels.
  16. 32. AV valve between left atrium and left ventricle.
  17. 34. Central compartment of the thoracic cavity containing the heart and other thoracic organs.