| 1
.
| Pulmonary trunk |
| 2
.
| Right semilunar cusp |
| 3
.
| Anterior semilunar cusp |
| 4
.
| Left semilunar cusp (together 2-4 make up the pulmonary valve |
| 5
.
| Nodule of valve |
| 6
.
| Left coronary artery (at origin from aortic sinus) |
| 7
.
| Ascending aorta |
| 8
.
| Left fibrous trigone |
| 9
.
| Left ventricle |
| 10
.
| Left atrioventricular opening |
| 11
.
| Anterior cusp of mitral valve |
| 12
.
| Posterior cusp of mitral valve |
| 13
.
| Myocardium left atrium (cut across) |
| 14
.
| Right fibrous trigone |
| 15
.
| Atrioventricular bundle (bundle of His) |
| 16
.
| Posterior interventricular sulcus |
| 17
.
| Right atrioventricular opening |
| 18
.
| Conus arteriosus |
| 19
.
| Left semilunar cusp (aortic) |
| 20
.
| Upper pointer: Right semilunar cusp Lower pointer: posterior semilunar cusp (of aortic valve) |
| 21
.
| Right coronary artery (at origin from aortic sinus) |
| 22
.
| Atrioventricular septum |
| 23
.
| Anterior semilunar cusp (pulmonary) |
| 24
.
| Septal (medial) cusp of tricuspid valve |
| 25
.
| Posterior cusp tricuspid valve |
| 26
.
| Right ventricle |
| 27
.
| Myocardium right atrium (cut across) |
