AP BIOLOGY

Detailed explanation-1: -It consists of blood vessels directly connected to nephrons. Also, it contains a major part of glomeruli. Hence, the right option is option B that states that Henle’s loop and Vasa recta are not parts of the renal cortex.

Detailed explanation-2: -The cortex contains the renal corpuscle, proximal, and distal convoluted tubules. The medulla and medullary rays contain the loops of Henle and collecting ducts.

Detailed explanation-3: -It contains the renal corpuscles and the renal tubules except for parts of the loop of Henle which descend into the renal medulla. It also contains blood vessels and cortical collecting ducts.

Detailed explanation-4: -Eighty-five percent of nephrons are cortical nephrons, deep in the renal cortex; the remaining 15 percent are juxtamedullary nephrons, which lie in the renal cortex close to the renal medulla.

Detailed explanation-5: -The loop of Henle has a thin descending limb, a thick ascending limb and a thin ascending limb. The fluid entering the descending limb contains sodium chloride and other salts, urea and other chemicals that have been filtered out from the blood.