Question

The narrow apex of pyramid is called

• A. Column of Bertin
• B. Calyx
• C. Papilla
• D. Pelvis

Answer 1

The correct option is C Papilla

Papillary (collecting) ducts are anatomical structures of the kidneys, previously known as the ducts of Bellini. Papillary ducts represent the most distal portion of the collecting duct. They receive renal filtrate (precursor to urine) from several medullary collecting ducts and empty into a minor calyx. Papillary ducts continue the work of water reabsorption and electrolyte balance initiated in the collecting tubules. Medullary collecting ducts converge to form a central (papillary) duct near the apex of each renal pyramid.

So, the correct answer is 'Papillary duct of Bellini'.