<P> The trigone ( a.k.a. vesical trigone ) is a smooth triangular region of the internal urinary bladder formed by the two ureteric orifices and the internal urethral orifice . </P>
<P> The trigone ( a.k.a. vesical trigone ) is a smooth triangular region of the internal urinary bladder formed by the two ureteric orifices and the internal urethral orifice . </P>
trigone is a portion of the blank bladder
trigone is a portion of the blank bladder
urinary
urinary