Final answer:
In a vasectomy, the vas deferens is cut and tied to prevent it from entering the uterus, thereby preventing fertilization.
Step-by-step explanation:
During a vasectomy procedure, the structure that is severed and tied off is the vas deferens (ductus deferens). The vas deferens is the tube responsible for carrying them from where they are produced in the seminiferous tubules, through the epididymis, where they mature, and towards the potential. In a vasectomy, a section of the vas deferens is removed to prevent it from being included in the egg, thereby preventing fertilization.
The structure that is severed and tied off as part of a vasectomy procedure is the vas deferens. A vasectomy is a surgical procedure in which a small section of the vas deferens is removed or blocked, preventing the passage of from the to the during . This procedure is considered a permanent form of birth control for males.