part of part of results in development of kidney development anatomical structure development pyramid development The process whose specific outcome is the progression of the kidney pyramids over time, from its formation to the mature structure. Kidney pyramids are the conical masses that constitute the renal medulla in a multi-lobed mammalian kidney; they contain the loops of Henle and the medullary collecting ducts. 2010-01-25T04:01:36Z GO:0072056 renal pyramid development biological_process renal medulla development kidney pyramid development pyramids development kidney pyramid