Which one of the following statement is incorrect about menstruation?
Which one of the following statement is incorrect about menstruation?
During normal menstruation about $40 \mathrm{~mL}$ blood is lost
The menstrual fluid can easily clot
At menopause in the female, there is especially abrupt increase in gonadotropic hormones
The beginning of the cycle of menstruation is called menarche
Solution
During normal menstruation approximately $40 \mathrm{~mL}$ of blood and an additional $35 \mathrm{~mL}$ of serous fluid are lost. The menstrual fluid is normally non-clotting because a fibrinolysin is released alongwith necrotic endometrial material.
The cause of menopause is burning out of the ovaries. At about age 45 years only a few primordial follicles remain to be stimulated by FSH and LH. The estrogen production fall below a critical value and the gonadotropic hormones (FSH and $\mathrm{LH}$ ) are produced regularly from the pituitary so, there level increase in body.