Quick Facts
Origin: Union of pulmonary capillary networks.
Course: Accompanies the anterior segmental bronchus (B3) of right lung.
Tributaries: Intersegmental and intrasegmental parts.
Drainage: Anterior bronchopulmonary (and surrounding) segment of right lung.
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Vein
A venous sinus is a vein with a thin wall of endothelium that is devoid of smooth muscle to regulate its diameter.
