Question: which one of the following regions of the nephron is located in the renal medulla?
Answer: This is the proximal end of the nephron, which is expanded into an ovoid structure. The renal corpuscles are always found in the renal cortex. Here a compact mass of looped fenestrated capillaries called the glomerulus (latin for 'small ball') is encapsulated by the proximal end of the renal tubule ('Bowman's capsule).