collecting duct of renal tubule papillary duct The terminal portions of the medullary collecting ducts are the papillary ducts, which end at the renal papilla and empty into a minor calyx. UBERON:0005167 SCTID:110623009 duct of Bellini BTO:0004540 Wikipedia:Duct_of_Bellini MA:0001646 Bellini's duct renal papillary duct papillary duct of kidney EMAPA:35655 uberon papillary duct