ductus reuniens ductus reuniens the ductus reuniens also the canalis reuniens of hensen is part of the human inner ear. it connects the lower part of the saccule to the cochlear duct near its vestibular extremity. ductus reuniensthe membranous labyrinth. (canalis reuniens labeled at bottom center.)canalis reuniens is #19, labeled at bottom center.detailsidentifierslatinductus reuniensta98a15.3.03.081ta27008fma61252anatomical terminology