BOY GENITOURINARY TRACT,The urinary and reproductory system in a 7-year-old boy. On the top, we have the two kidneys (the left part is shown in section view) capped with suprarenal glands (in yellow), then the ureters leaving the two kidneys descending up to the bladder at the back of which we can distinguish the seminal vesicles, then ends with the urethra beneath the bladder by the prostate, and further down surrounded by spongious and cavernous bodies of the penis. On each side of the penis bottom are the testicles capped by the epididymis of which leave the vas deferent that pulls up behind the bladder and join the seminal vesicles on each side to end in the prostate.