1
.
| Right auricle |
2
.
| Margins of right atrioventricular opening |
3
.
| Right pulmonary veins (cut across) |
4
.
| Pectinate muscles |
5
.
| Anterior cusp tricuspid valve |
6
.
| Septomarginal trabecula (moderator band) |
7
.
| Crista terminalis (in reflected part of atrial wall) |
8
.
| Papillary muscles |
9
.
| Posterior cusp tricuspid valve |
10
.
| Chordae tendineae |
11
.
| Septal (medial) cusp of tricuspid valve |
12
.
| External surface of right atrium |
13
.
| Inferior vena cava (cut off) |