pharyngeal plexus (venous) pharyngeal plexus (venous) the pharyngeal plexus (venous) is a network of veins beginning in the pharyngeal (nerve) plexus on the outer surface of the pharynx, and, after receiving some posterior meningeal veins and the vein of the pterygoid canal, end in the internal jugular. pharyngeal plexus (venous)detailsidentifierslatinplexus pharyngeusta98a12.3.05.006ta24805fma50822anatomical terminology