Question

Duct of Bellini opens on

• A. Collecting duct
• B. Ureter
• C. Renal papilla
• D. DCT

Answer 1

Answer: (C)

Renal papilla

Collecting ducts can be traced in medullary pyramids. The reabsorption of the collecting duct is regulated by ADH and the hormones of adrenal cortex. These are long tubules which traverse through the medulla in the pyramids and open in the papilla of the medulla (in rabbit) or papilla of the individual medullary pyramid (in human). Several adjacent collecting ducts converge to open into a common short and thick duct of Bellini (present in papilla of medulla). All ducts of Bellini then open at the tip of the papillae into the pelvis.

So, the correct answer is option D.