A male vasectomy is a surgical procedure performed on the vas deferens. There are several layers of tissue in the scrotum that need to be removed in order to reach the vas deferens. These tissues include skin, Scarpa’s fascia, the dartos, the external spermatic fascia, the cremaster muscle, the tunica vaginalis, and the epididymis. The epididymis is located on the posterior side of the testicle with the head on the superior aspect and the tail on the inferior side.