part of part of Homo sapiens organ part vasa recta descending vasa recta KUPO:0001002 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