Step 1: What Sterilisation Is:
Sterilisation is a terminal (permanent) surgical method of contraception that blocks the transport of gametes so that fertilisation cannot occur.
Step 2: The Two Procedures:
In males, it is called vasectomy — a small part of the vas deferens is cut and tied/sealed on both sides through a small incision or puncture in the scrotum, blocking sperm transport into the ejaculate. In females, it is called tubectomy — a small part of each fallopian tube (oviduct) is cut and tied/sealed through an incision in the abdomen or vagina, blocking the ovum from meeting sperm.