PATHOLOGY

Detailed explanation-1: -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-2: -Answer and Explanation: The bulk of the nephron tubes is located in the region called the renal medulla.

Detailed explanation-3: -Each of your kidneys is made up of about a million filtering units called nephrons. Each nephron includes a filter, called the glomerulus, and a tubule. The nephrons work through a two-step process: the glomerulus filters your blood, and the tubule returns needed substances to your blood and removes wastes.