APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -The loop of Henle is supplied by two vasa recta which are straight vessels closely accompanying the tubule’s hairpin-shaped course. These carry blood in opposite directions, just like the passage of tubular fluid – the countercurrent mechanism. Thus they absorb water on the one hand and solute on the other.

Detailed explanation-2: -The ascending loop of Henle does not absorb water because it is permeable to sodium and chlorine ions only.

Detailed explanation-3: -Water reabsorption occurs in the thin descending limb of the Loop of Henle.

Detailed explanation-4: -The liquid entering the loop of Henle is the solution of salt, urea, and other substances passed along by the proximal convoluted tubule, from which most of the dissolved components needed by the body-particularly glucose, amino acids, and sodium bicarbonate-have been reabsorbed into the blood.