Abnormal male internal genitalia morphology Dilated ejaculatory duct 2024-03-08T06:51:53Z Ejaculatory duct dilated Increase in diameter of the ejeculatory duct. The ejaculatory duct delivers sperm into the urethra, adding secretions from the prostate and is formed by the union of the vas deferens with the duct of the seminal vesicle.