part of part of overlaps overlaps contributes to morphology of Homo sapiens organ part cortex of kidney nephron tubule medullary ray Their name is potentially misleading -- the 'medullary' refers to their destination, not their location. They are located only in the renal cortex, and not in the renal medulla FMA:74299 A renal, cortical lobule, consisting of the ascending or descending limbs of the loop of Henle or of the collecting tubules; medullary rays are regions where parallel arrays of straight tubules travel perpendicular to the capsule and extend from the cortex to the medulla. renal medullary ray UBERON:0009883 EMAPA:37906 FMA says parenchyma, MP says cortex Wikipedia:Bone_marrow_of_ovaryry_ray_(anatomy) kidney medullary ray BTO:0001155 Ferrein's pyramid