Base and diaphragmatic surface
The big black hole is the IVC. Just above are four pulmonary veins entering the left atrium. The curvy structure between the atria and left ventricle is the coronary sinus. Also note how the pulmonary trunk divides into two in the aortic arch.
Dr. S. Chandra
Dr. S. Chandra, Faculty of Medicine, Memorial University of Newfoundland
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