Ejaculatory Ducts The ejaculatory ducts are the two short tubes each formed by the union of ducts from seminal vesicle and vas deferens. They pass through the prostate gland and join the prostatic part of the urethra. The ejaculatory ducts are composed of the fibrous, muscular and columnar epithelial tissue. Ejaculatory ducts carry sperms and secretion of seminal vesicles