NEET PG DENTAL EXAM

Detailed explanation-1: -Two of the openings are from the ureters and form the base of the trigone. Small flaps of mucosa cover these openings and act as valves that allow urine to enter the bladder but prevent it from backing up from the bladder into the ureters. The third opening, at the apex of the trigone, is the opening into the urethra.

Detailed explanation-2: -The trigone is a triangular muscular structure located between the bladder and urethra. Effective connection between the ureters and the trigone are vital for proper functioning of the ureteral valve mechanism.

Detailed explanation-3: -A triangular structure, called the trigone, is found on the posterior wall of the urinary bladder. The trigone as three openings: on the right, the right ureteral opening, on the left, the left ureteral opening, and inferiorly, the internal urethral orifice leading to the urethra.