Which one of the following statements is incorrect about menstruation?
(1) The beginning of the cycle of menstruation is called menarche
(2) During normal menstruation about 40 ml blood is lost
(3) The menstrual fluid can easily clot
(4) At menopause in the female, there is especially abrupt increase in gonadotropic
hormones
Sol. Answer (3)
Menopause is a senile change in ovaries. After menopause the level of pituitary
gonadotropins remain same or slightly increase. FSH is more than LH; but the ovaries are
not responding to these hormone, because all the ovarian follicles are converted into
follicular atresia. There is decline in the level of progesterone and estrogen. Initially the
blood inside the uterus clots, but it is liquefied by the enzyme plasmin released by uterus.
Menstrual fluid which is discharged cannot clot again.