part of metanephros development pyramid development metanephric pyramids development mah The process whose specific outcome is the progression of the metanephric pyramids over time, from their formation to the mature structures. Metanephric pyramids are the conical masses that constitute the renal medulla in a metanephros; they contain the loops of Henle and the medullary collecting ducts. GO:0072211 metanephric pyramid development metanephric renal medulla development metanephric renal pyramid development biological_process 2010-03-18T01:04:51Z metanephric kidney pyramid development