List three techni

The methods or devices used to prevent fertilization and implantation are referred to as contraceptive methods. Some of the methods are:

a. Barrier methods: Use of condoms in male and diaphragms in female prevents the entry of sperms into the uterus.

b. Chemical methods: Use of various hormonal pills prevents the release of an egg from the ovary. They cause a change in menstrual cycle thus delaying ovulation.

c. IUCDs: Use of IUCDs devices like copper-T which is fitted inside the uterus that prevents implantation of the embryo into the wall of the uterus.

d. Surgical methods: Tubectomy is done in female where a small portion of oviducts are removed and ligated to prevent the entry of egg from ovaries. Vasectomy is done in males where a small portion of vas deferens is cut and ligated preventing passage of sperms.

Chemical method is not meant for males.

Use of these techniques have direct impact on health and prosperity of family by

a. Preventing unwanted pregnancies to control population growth.

b. It protects from sexually transmitted diseases like AIDS, Syphilis etc.

c. The proper health of mother and child by preventing frequent pregnancies.

d. Sufficient gap between the offspring for proper care of the children.