Long Answer Type(a) Arrange the following hormones in the sequence of their secretion in a pregnant woman.
(b) Mention their source and the function they perform.
Short Answer TypeMedically it is advised to all young mothers that breastfeedings is the best for their newborn babies. Do you agree? Give reasons in support of your answer.
How can the scientific understanding of the mentrual cycle of human females help as a contraceptive measure ?
Scientific understanding of menstrual cycle of human females is very important as a contraceptive measures.
It helps in the following ways :
(i) Safe period (Rhythm method) A week before and a week after menstrual bleeding is considered as the safe period for sexual intercourse. The idea is based on the following facts :
(A) Ovulation occurs on 14th day of cycle and ovum survives for about 2 days.
(B) Sperms remain alive for about 3 days. This method reduces the chances of pregenancy by about 80%.
(ii) Pills used by females are also dependent on the menstrual cycle. The pills have to be taken daily for a period of 21 days starting preferably within the first five days of the menstrual cycle. It is repeated again after a period of 7 days. These inhibit ovulation and implantation as well as alter the quality of cervical mucus to prevent/retard entry of sperms.
Switch
