This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pelvis and Perineum 3, Subject name: Anatomy
The interureteric ridge forming the base of trigonal structure is also called 
Select and explain. 
A. Bell's muscle, B. Mercier's bar, C. Rice's bar, D. Toldt's bar
B: Mercier's bar
Answer: B: Mercier's bar 
Explanation: Interureteric fold: A fold of mucous membrane extending from the orifice of the ureter of one side to that of the other side. Also called Mercier's bar. Bell's muscle A band of muscular fibres, forming a slight fold in the wall of the bladder, running from the uvula to the opening of the ureter on either side, bounding the trigonium. * Toldt's fascia - fixation of fascial planes behind the body of the pancreas.