1
.
| Superior vena cava |
2
.
| Fat in coronary sulcus (sectioned) |
3
.
| Flap of anterior wall of right ventricle (retracted) |
4
.
| Anterior cusp tricuspid valve |
5
.
| Right atrioventricular opening |
6
.
| Septal (medial) cusp of tricuspid valve |
7
.
| Anterior papillary muscle |
8
.
| Posterior cusp tricuspid valve |
9
.
| Right ventricle |
10
.
| Interventricular septum (cut through) |
11
.
| Pulmonary trunk |
12
.
| Ascending aorta (opened) |
13
.
| Aortic valve |
14
.
| Valve of pulmonary trunk |
15
.
| Conus arteriosus (interior) |
16
.
| Anterior cusp of mitral valve |
17
.
| Left ventricle left |
18
.
| Papillary muscles |
19
.
| Position of anterior interventricular sulcus |
20
.
| Left ventricle (external surface) |