![Superior Vein of Left Lung](https://cdn.3d4medical.com/complete_anatomy-userdata/video-sticky/f8/b1ae13992d.webp?fm=webp&w=738&q=75)
Quick Facts
Origin: Union of pulmonary capillary networks.
Course: Accompanies the superior segmental bronchus (B6) of left lung.
Tributaries: None.
Drainage: Superior basal bronchopulmonary (and surrounding) segments of left lung.
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Vein
![ScienceDirect image](/images/science-direct-picture.png)
A venous sinus is a vein with a thin wall of endothelium that is devoid of smooth muscle to regulate its diameter.
![Complete Anatomy](/images/ca-banner.webp?fm=webp&w=230&q=75)