Explain about sexual intercourse and contraceptive pills?

The male and female reproductive organs of human beings become functional only after attaining sexual maturity. Then various changes take place in human body. During puberty sexual hormones and gametes begin to be produced. 

The male penis is introduced inside the female vagina during sexual intercourse and the male gamete, the sperm is released into the vagina.

Sperms are active and mobile and reach ovary and then pass into fallopian tube to fertilize the ovum. 

Fertilization occurs in the fallopian tube if copulation takes place during ovulatory period. 

Embryo’s development starts immediately and menstruation stops. 

Contraceptive Pills:

Contraceptive methods have been devised to avoid pregnancy and control child birth. These methods are generally adopted to prevent unwanted conception and to have sufficient gap between successive births. 

Oral contraceptive pills are least failure if taken properly as per doctor’s advice. It involves the intake of synthetic hormones by the females to prevent ovulation. They are either progesterone or progesterone estrogen combinations. They alter ovulation and implantation and also modify the quality of cervical mucus to prevent entry of sperms.

It is considered as an ideal choice of contraception for unmarried or newly married women, but has an adverse effect on breast feeding women because the lactation is affected due to its estrogen content. Also it cannot be considered as absolutely safe.