List and explain in brief three methods of contraception.
Answers
Mechanical barrier: In this method sperm does not reach the egg. Example - Condoms by males and Copper-T bu females.
Chemical method : Oral contraceptive Pills change the hormonal balance of the body. So that the egg is not released. Example : I-Pills, Saheli
Surgical Methods: It is the most safest method in which the vas deferens of male and fallopian tubes in females can be surgically blocked.
Hope this will help you ^_^
Answer:
Three different methods of contraception:
1.Barrier method: Physical devices like condoms, diaphragm and cervical caps are used. They prevent entry of sperm in female genital tract, so, act as a barrier between them.
2.Chemical method: They act by changing hormonal balance of body so that eggs are not released and fertilisation cannot occur. Females use two types of pills for preventing pregnancies, that is oral pills and vaginal pills.
Oral pills has hormones that stop ovaries from releasing ovum into fallopian tube. It is also called oral contraceptives. Other contraceptive devices are loop or copper-T, are placed in uterus to prevent pregnancy.
3.Surgical method: They are carried out in males and females.
In males, a small portion of the sperm duct (vas deferens) is blocked by surgical operation. It prevents the eggs to reach the uterus.
In females, fallopian tubes are cut and tied.
Explanation:
I think this will help you