Uberon definition : the usually crescent-shaped opening of the urinary bladder into the urethra, placed
at the anteroinferior angle (apex) of the urinary bladder trigone;
Uberon synonym : internal urethral ostium; vesicourethral orifice; internal urethral orifice of urinary bladder; internal meatus of urethra;
Uberon related term : internal urethral ostium; internal urinary meatus;