The shape of vasa recta is

If the kidneys fail to reabsorb water,what will be the effect on the tissues?

The human kidneys produce urine that is approximately .......... times more concentrated than the initial filtrate.

The glomerular filtrate in the loop of Henle gets concentrated in the descending and then gets diluted in the ascending limbs. Explain.

The main function of the loop of Henle is

The proximity between Henle's loop and vasa-recta as well as the counter-current in them help in maintaining an ...$A$... in molarity towards the inner medullary interstitium,i.e.,from ...$B$... $mOsmol \ L^{-1}$ in the cortex to about ...$C$... $mOsmol \ L^{-1}$ in the inner medulla. Here $A$,$B$,and $C$ refer to: