human_reference_atlas part of has part blood vessel endothelial cell Homo sapiens organ part inner medulla of kidney kidney pyramid renal efferent arteriole vasa recta vasa recta descending limb uberon Descending Vasa Recta descending vasa recta of kidney descending vasa recta of kidney AS KUPO:0001002 descending vasa recta UBERON:0009202 This class was created in order to align KUPO with CL. The original class was undefined, and the intended meaning is not clear, may be obsoleted in future. The vasa recta is parallel to the loop of Henles, this may refer to the portion of the vasa recta parallel to the descending limb