Its large size making it ideal for group study, this heart separates into two parts, which makes it easy to trace blood flow through the chambers, valves and vessels. Featured - the coronary arteries, circumflex artery, coronary veins and coronary sinus, segments of the esophagus and trachea, lower portion of the pericardium, diaphragm section, flexible tricuspid valve, pulmonary valve, mitral valve and aortic valve.

Overall dimensions: 7x5x10 inches (17x13x25cm).

There are 59 features number coded and identified in an accompanying key including:

1. Right atrium
2. Right auricle
3. Right ventricle
4. Left atrium
5. Left auricle
6. Left ventricle
7. Superior vena cava
8. Inferior vena cava
9. Left brachiocephalic (Innominate) vein
10. Right brachiocephalic (Innominate) vein
11. Ascending aorta
12. Aortic arch
13. Left subclavian artery
14. Left common carotid artery
15. Brachiocephalic trunk (Innominate artery)
16. Azygous vein
17. Conus arteriosus
18. Pulmonary trunk
19. Left pulmonary arteries
20. Right pulmonary arteries
21. Left pulmonary veins
22. Right pulmonary veins
23. Left coronary artery
24. Anterior interventricular branch of left coronary artery (Left anterior descending a.)
25. Circumflex artery (Circumflex branch of left coronary artery)
26. Right coronary artery
27. Great cardiac vein
28. Coronary sinus
29. Coronary sulcus
30. Anterior interventricular sulcus
31. Apex of heart
32. Esophagus
33. Trachea
34. Bifurcation of trachea (esophagus covers the point of bifurcation)
35. Cartilaginous rings
36. Lower portion of pericardium (the pericardium covering the heart has been cut and removed)
37. Diaphragm
38. Central tendon of diaphragm —not painted on model
39. Aortic hiatus
40. Esophageal hiatus
41. Vena cava foramen
42. Descending aorta
43. Interior of right atrium
44. Interior of right auricle
45. Orifice of superior vena cava
46. Orifice of inferior vena cava
47. Tricuspid valve (Right atrioventricular valve)
48. Interior of right ventricle
49. Chordae tendineae
50. Papillary muscle
51. Interventricular septum
52. Trabeculae carneae
53. Pulmonary (semilunar) valve
54. Interior of left atrium
55. Interior of left auricle
56. Orifices of pulmonary veins
57. Mitral (bicuspid) valve (Left atrioventricular valve)
58. Papillary muscle of left valve
59. Aortic (semilunar) valve
60. Myocardium