Capillary parallel to loop of Henle is

Capillary parallel to loop of Henle is vasa recta.

The efferent arterioles divide to form the peritubular capillaries. They surround tubular parts of the nephron in the renal cortex. Extending from some efferent arterioles are long, U-shaped capillaries called vasa recta that runs parallel to the loop of Henle.