XII Std Zoology Chapter Reproductive Health IUDs such as Cu T- A, Nova T, Cu , Cu T Ag, Multiload , etc. release free copper and copper salts into the uterus and suppress sperm motility. They can remain in the uterus for five to ten years. Hormone-releasing IUDs such as Progestasert and LNG – are often called as intrauterine systems (IUS).
They increase the viscosity of the cervical mucus and thereby prevent sperms from entering the cervix. Non-medicated IUDs are made of plastic or stainless steel. Lippes loop is a double S-shaped plastic device. .
Permanent birth control methods are adopted by the individuals who do not want to have any more children. Surgical sterilisation methods are the permanent contraception methods advised for male and female partners to prevent any more pregnancies. It blocks the transport of the gametes and prevents conception. Tubectomy is the surgical sterilisation in women.
In this procedure, a small portion of both fallopian tubes are cut and tied up through a small incision in the abdomen or through vagina. This prevents fertilization as well as the entry of the egg into the uterus. Vasectomy is the surgical procedure for male sterilisation. In this procedure, both vas deferens are cut and tied through a small incision on the scrotum to prevent the entry of sperm into the urethra.
Vasectomy prevents sperm from heading off