Answer:
The vas deferens is the tube that carries the sperm from the testicle during ejaculation. If you wanted to stop its ability to carry the sperm, you should see a doctor about a vasectomy. A vasectomy is a simple in-office procedure where the vas deferens is cut. It is a minimally invasive way to get relatively permanent birth control. I say relatively permanent because there is a surgery to reverse it if needed, though the reversal surgery is not 100% successful.