PATHOLOGY

Detailed explanation-1: -The medulla is divided into 8-18 conical regions, called the renal pyramids; the base of each pyramid starts at the corticomedullary border, and the apex ends in the renal papilla which merges to form the renal pelvis and then on to form the ureter.

Detailed explanation-2: -Underneath the cortex, we find the center of the kidney, the renal medulla. The main structures inside the medulla are pyramid-shaped; they’re called the renal pyramids. The apex of each pyramid faces the center of the kidney and is connected to urine-collecting tubules.

Detailed explanation-3: -The medulla consists of multiple pyramidal tissue masses, called the renal pyramids. In between the pyramids are spaces called renal columns through which the blood vessels pass. The tips of the pyramids, called renal papillae, point toward the renal pelvis. There are, on average, eight renal pyramids in each kidney.