Question

A loop of capillary running parallel to the Henle's loop.

Answer 1

The efferent arteriole emerging from the glomerulus forms a fine capillary network around the renal tubule called the peritubular capillaries. A minute vessel of this network runs parallel to the Henle’s loop forming a ‘U’ shaped vasa recta. Vasa recta are absent or highly reduced in cortical nephrons.