The vas deferens unites with a tube coming from the urinary bladder to form a common passage called the urethra.
The urinary bladder is called simply bladder. The urinary bladder is a hollow muscular organ in the humans and other vertebrates that stores urine from the kidney before disposal by urination.
The urinary bladder is a triangle-shaped hollow organ is located in the lower abdomen. It is held in place by ligaments that attach to other organ and the pelvic bones.