Description
The pharynx receives its venous drainage primarily from pharyngeal plexus, the external palatine and tonsillar veins, and the vein of the pterygoid canal. These vessels eventually drain into the internal jugular vein.
Learn more about this topic from other Elsevier products
Vein
A venous sinus is a vein with a thin wall of endothelium that is devoid of smooth muscle to regulate its diameter.