The outermost layer of kidney wall is called cortex. It is divided into two parts. Supercial cortex and juxtamedullary cortex. The outer layer of the cortex is called the superficial cortex and the inner layer of the cortex is called the juxtamedullary cortex. The supracial cortex contains 85% and the juxtamedullary cortex 15% of nephrons. The cortex contains the renal corpuscle, proximal convoluted tubule, and distal convoluted tubule of the nephron.