[TA] a slight projection into the cavity of the bladder, usually more prominent in old men, just behind the urethral opening, marking the location of the middle lobe of the prostate. SYN: uvula vesicae [TA], Lieutaud uvula.

The uvula vesicae, also known as the uvula of the bladder trigone, is a small triangular-shaped ridge of mucous membrane that protrudes into the lumen of the urinary bladder at the internal urethral orifice. The internal urethral orifice is the opening at the base of the bladder where the urethra, the tube that carries urine out of the body, begins.

The uvula vesicae is a mucosal fold that helps to direct the flow of urine into the urethra during urination. It is located at the base of the bladder, at the posterior end of the bladder trigone, which is a triangular area formed by the two ureteric orifices and the internal urethral orifice.

The uvula vesicae is an important landmark in urology, as it is used to identify the internal urethral orifice during cystoscopy, which is a diagnostic procedure used to examine the bladder and urethra for any abnormalities or diseases. It is also used as a reference point during bladder surgery, to ensure that the urethra is not damaged during the procedure.