. List four methods of contraception used by humans
List four methods of contraception used by humans. Justify the following statement: "The use of contraceptive methods has a direct effect on the health and prosperity of a
There are three different methods of contraception:
(i) Barrier methods. In these methods, physical devices such as condoms, diaphragm and cervical caps are used. These devices prevent the entry of sperm in the female genital tract, thus acting as a barrier between them.
(ii) Surgical methods. There are surgeries that can be carried out in the males and females. In males, a small portion of the sperm duct (vas deferens) is blocked by surgical operation. It prevents the egg to reach the uterus. In both the cases, fertilisation will not take place:
(iii) Chemical methods. This category of contraceptive acts by changing the hormonal balance of the body so that eggs are not released and fertilisation cannot occur. Females use two types of pills for preventing pregnancies, i.e., oral pills and vaginal pills. The oral pills contain hormones which stop the ovaries from releasing ovum into the fallopian tube. This is also called oral contraceptives (OC).
(iv) Other contraceptive devices such as loop or the copper-Tare placed in the uterus to prevent pregnancy.
Effect on health and prosperity of a family:
(i) Contraceptive methods are used to prevent the spreading of sexually transmitted diseases like syphilis, AIDS, etc.
(ii) Contraceptive methods are also used to control human population by checking the unwanted pregnancies during sexual activities.
(iii) It helps in family planning by controlling the number of children in the family, thereby reducing the chances of financial burden and poverty