Bassett Collection Large Image - Lane Medical Library, Stanford University Medical Center

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Detailed dissection of heart

Atrial myocardium, basal view

The epicardium has been removed from all parts of the atria with the exception of the left auricle.

1 .	Ligamentum arteriosum
2 .	Right pulmonary artery
3 .	Left pulmonary artery
4 .	Left auricle (epicardium intact)
5 .	Left superior pulmonary vein
6 .	Left inferior pulmonary vein
7 .	Left atrium
8 .	Upper pointer: Right superior pulmonary vein (note tributary joining vein close to atrial wall) Lower pointer: Right inferior pulmonary vein
9 .	Left ventricle (epicardium intact)
10 .	Posterior interventricular sulcus (pointer on middle cardiac vein)
11 .	Right ventricle
12 .	Inferior vena cava
13 .	Pulmonary trunk
14 .	Ascending aorta
15 .	Superior vena cava
16 .	Right auricle
17 .	Sino-atrial node
18 .	Right atrium
19 .	Interatrial groove