Abdomen, Pelvis & Perineum
Trigone of bladder, not true (AIIMS - Nov - 2014)
|B||Loosely attached to underlying muscle|
|C||Transitional epithelium lines it|
|D||It is a remnant of mesonephric duct opening into post urogenital sinus|
Loosely attached to underlying muscle
• The trigone is a smooth triangular region of the internal urinary bladder formed by the two ureteral orifices and the internal urethral orifice.
• The mucous membrane is loosely connected to the bladder wall and folds up into rugae when the bladder is empty, except in the trigone of the bladder.
• Here the mucous membrane is closely connected to the detrusor muscle and is always smooth.