1. 5 1 2 3 4

2. Fibrous pericardium / Pericardial sac SVC Brachiocephalic veins Left common carotid Left subclavian artery

3. 4 3 1 2

4. Cut edge of the pericardial sac Epicardium / visceral layer Of the serous pericardium Brachiocephalic artery Right common carotid

5. 4 5 1 3 2

6. Parietal layer of the serous pericardium / Inside of pericardial sac IVC Pulmonary veins Pulmonary trunk Aortic arch

7. 1 3 2 4

8. Right coronary artery in Coronary sulcus Anterior interventricular artery Pericardial cavity / space Great cardiac vein

9. 1 5 4 2 3

10. Fossa ovale Tricuspid valve Papillary muscle Chordae tendinae Pulmonary semilunar valve

11. 1 3 54 2 6

12. Pulmonary arteries Ligamentum arteriosum IVC Thoracic aorta Azygos vein Pulmonary veins

13. 1 2 4 3 5

14. Ligamentum arteriosum Anterior interventricular artery Right coronary artery In coronary sulcus SVC

15. 5 6 1 2 3 4

16. Right atrium Superior vena cava Brachiocephalic veins Brachiocephalic artery Aortic arch Right ventricle

17. 7 6 4 3

18. Fossa ovale Opening from coronary sinus Right and Left bundle branches Purkenje fibers

19. 6 1 2 3 7 8 5 4

20. Interventricular septum Brachiocephalic artery Left common carotid artery Left subclavian artery Coronary arteries Tricuspid valveBicuspid or Mitral valve Aortic semilunar valve

21. 5 4 6 7 1 3 2

22. Opening from coronary sinus Fossa ovale AV Node AV Bundle (of His) Pulmonary veins SA Node Coronary arteries

23. 3 4 5 2 1

24. Aortic Semilunar valve Chordae tendinae Papillary muscle Pulmonary veins Right and left bundle branches

25. 1 2 3

26. Pulmonary artery Pulmonary trunk Pulmonary vein

27. 4 3 1 2

28. Coronary sinus IVC Pulmonary veins Pulmonary artery

29. 2 1 3 4

30. Pulmonary veins Pulmonary artery Right atrium Coronary sinus

31. 8 3 15 7 6 4 2

32. SVC IVC Anterior interventricular artery Right coronary artery Right atrium Right ventricle Left ventricle

33. 7 6 3 1 2 4 5

34. Right atrium Tricuspid valve Bicuspid / Mitral valve Pulmonary semilunar valve Aortic semilunar valve Chordae tendinae Papillary muscle

35. 2 4 3 16 5

36. Pulmonary veins Coronary sinus IVC SVC Aorta Pulmonary artery

37. 2 5 4 3 1

38. Ligamentum arteriosum Superior vena cava Brachiocephalic artery Pulmonary trunk Aorta

39. 4 2 3 1

40. Superior vena cava Ligamentum arteriosum Pulmonary trunk/artery Aorta

41. 2 1 5 3 4

42. Pulmonary trunk Ligamentum arteriosum Brachiocephalic artery Left ventricle Right ventricle

43. 4 3 5 2 1

44. Interventricular groove Right ventricle Left ventricle Pulmonary trunk Brachiocephalic artery

45. 1 2 3

46. Inferior vena cava Superior vena cava Groove containing coronary sinus

47. 4 5 6 7 1 2 3

48. Left ventricle Chordae tendinae Cusps of the bicuspid / Mitral valve Cusp of aortic semilunar valve Aorta Cusp of tricuspid valve Interventricular septum

49. 2 3 4 1 5 6

50. Bicuspid valve Chordae tendinae Papillary muscle Pulmonary trunk Aorta Brachiocephalic artery

51. 1 2

52. Bicuspid valve Chordae tendinae

53. 2 1 3

54. right atrium Pericardal sac Apex

55. Layers of the heart: 1 2 3

56. Epicardium Myocardium Endocardium

57. 1 2 3 4

58. Umbilical vein Inferior vena cava Umbilical arteries Abdominal aorta

59. 2 3 4 1 5 6

60. Umbilical vein Ductus venosus Hepatic portal vein Umbilical artery Inferior vena cava Abdominal aorta

61. 5 3 4 1 2 6

62. Pipe cleaner going Through foramen ovale Ductus arteriosus Pulmonary artery Pulmonary trunk Arch of the aorta Descending aorta

63. 1 2 3 4 5

64. Brachiocephalic artery Left common carotid artery Left subclavian artery Ductus arteriosus Pulmonary artery

65. 1 2 3 4 5

66. Brachiocephalic veins Superior vena cava Ascending aorta Pulmonary trunk Pipe cleaner traversing the Foramen ovale