pyloric vein: receives veins from the upper surfaces of the stomach and empties into the portal vein
gastric vein: one of several veins draining the stomach walls
superclass myriapoda: used in some classifications to encompass the millipedes (Diplopoda) and centipedes (Chilopoda); formerly a large taxon including also the Pauropoda and Symphyla; the term Myriapoda now usually used synonymously with Diplopoda and limited to the millipedes