FMA definition : Region of wall of urinary bladder, each instance of which is a smooth triangular region
of the mucous membrane in the fundus of some bladder; two of its corners are the ureteral
orifices, with the interureteric fold between them, and its third corner is the internal
urethral orifice.;
Synonyme FMA : Urinary bladder trigone; Vesical trigone; Trigone of bladder; Deep trigone; Lieutaud's trigone;
Region of wall of urinary bladder, each instance of which is a smooth triangular region
of the mucous membrane in the fundus of some bladder; two of its corners are the ureteral
orifices, with the interureteric fold between them, and its third corner is the internal
urethral orifice.