Ducts of the Urogenital System of the Pelvis The diagram reflects the ductal systems involved in the urogenital tract including the ureteral orifices that empty into the bladder, the prostatic urethra (bright orange) which is the receptacle of both urinary and seminal contents, orifices of the ejaculatory ducts that are the confluence of the seminal vesicle and the vas deferens, the 15-20 orifices of the prostatic ducts, and finally the small orifices of the ducts of Cowper’s gland which empty into the region of the penile urethra. CODE prostate normal bladder ureters ureteral orifice prostatic urethra urethra seminal vesicles vas deferens Cowper’s glands membranous urethra urethra penile urethra ejaculatory ducts normal anatomy Davidoff Art Image Courtesy Ashley Davidoff Copyright 2011