Ejaculatory duct is about two centimeters in length and is created when the seminal vesicle's duct merges with the vas deferens. . At this point, these ducts travel through the prostate and, at its far end, drain into the colliculus seminalis's urethra. The epididymis leads to the vas vas deferens that asecends and loops over the urinary bladder. It receives a duct from the seminal vesicle and opens into the urethra as the ejaculatory duct.
So, the correct answer is 'ejaculatory duct'.