MICROANATOMY

Detailed explanation-1: -The mature renal medulla, the inner part of the kidney, consists of the medullary collecting ducts, loops of Henle, vasa recta and the interstitium. The unique spatial arrangement of these components is essential for the regulation of urine concentration and other specialized kidney functions.

Detailed explanation-2: -Collecting ducts descend through the cortex and medulla and successively fuse near the inner medullary region. Toward the papillary tip, converging papillary ducts form approximately 20 large ducts, which empty into the renal pelvis. The collecting ducts are composed of two cell types: principal and intercalated cells.

Detailed explanation-3: -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-4: -The kidney is made up of solid tissue called parenchyma which consists of cortex and the medulla. The renal cortex is the outside section of the kidney, while the medulla is the inside section.