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left superior vena cava
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A left superior vena cava is the result of the following embryological sequence:
- obliteration of the right common cardinal vein
- obliteration of the proximal part of the right anterior cardinal vein
- persistence of the left anterior cardinal vein
The left anterior cardinal vein forms the left-sided vena cava. It drains into the coronary sinus. It is drained into by a communication from the distal part of the right anterior cardinal vein that forms the right brachiocephalic vein. The latter drains blood from the right side of the head and neck.
Last reviewed 01/2018
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