part of part of has part has part capable of part of contributes to morphology of renal water absorption renal medulla kidney medulla renal medullae set medullary pyramids Wikipedia:Renal_medulla The inner portion of the kidney consisting of the renal pyramids. MA:0000373 renal pyramids set NCIT:C12740 Note that 'renal medulla' is not synonymous with 'medullary region of kidney'. The former is composed of kidney pyramids only, while the latter covers kidney pyramids and renal columns, which are histologically different. MESH:D007679 pyramides renales SCTID:30737000 CALOHA:TS-1157 EMAPA:19279 BTO:0001167 renal pyramids medulla renalis renal marrow renal medullae GAID:425 UBERON:0000362 medulla of kidney galen:MedullaOfKidney medulla of organ kidney kidney pyramid