Advertisements
Advertisements
प्रश्न
What is menstruation? Explain.
उत्तर
In females, the reproductive phase of life begins at puberty (10 to 12 years of age) and generally lasts till the age of approximately 45 to 50 years. The ova begin to mature with the onset of puberty. In about 28 to 30 days, one of the ovaries matures and releases one ovum. During this period, the wall of the uterus becomes thick so as to receive the egg, in case it is fertilised and begins to develop. This results in pregnancy. If fertilisation does not occur, the released egg, and the thickened lining of the uterus, along with its blood vessels, are shed. This causes bleeding in women, which is called menstruation.
APPEARS IN
संबंधित प्रश्न
Reproductive age in women starts when their ______.
The male and the female gamete fuse together and form ______.
_______ usually occurs 14 days after ovulation.
During pregnancy, the corpus luteum continues to grow and produces large amount of estrogen and progesterone.
What is fertilization?
Explain the process of pregnancy.
Give a suitable word for the following statement.
It marks the beginning of reproductive period.
Normally pregnancy lasts for ______ days.
The male sex hormone is called estrogen.
The egg is released from the fallopian tube.
