kidney has two regions cortex :outer -coiumns of cortex divide medulla into pyramids medulla:inner -darker,cone-shaped medullary or renal pyramids -parallel bundles of urine-collecting tubules
kidney has two regionscortex :outer-coiumns of cortex divide medulla into pyramidsmedulla:inner-darker,cone-shaped medullary or renal pyramids-parallel bundles of urine-collecting tubules