Orifice of ureter
Encyclopedia
The orifices of the ureters are placed at the postero-lateral angles of the trigonum vesicae, and are usually slit-like in form.
In the contracted bladder
they are about 2.5 cm. apart and about the same distance from the internal urethral orifice
; in the distended viscus these measurements may be increased to about 5 cm.
In the contracted bladder
Urinary bladder
The urinary bladder is the organ that collects urine excreted by the kidneys before disposal by urination. A hollow muscular, and distensible organ, the bladder sits on the pelvic floor...
they are about 2.5 cm. apart and about the same distance from the internal urethral orifice
Internal urethral orifice
The internal urethral orifice is the opening of the urinary bladder into the urethra. It is placed at the apex of the trigonum vesicae, in the most dependent part of the bladder, and is usually somewhat crescent-shaped; the mucous membrane immediately behind it presents a slight elevation in males,...
; in the distended viscus these measurements may be increased to about 5 cm.