Question

Proliferative phase of menstrual cycle lasts for ….... days
A) 5
B) 8
C) 10
D) 12

Answer 1

The menstrual cycle is the monthly series of changes a woman's body goes through in preparation for the possibility of pregnancy.

Complete Answer:
A woman’s body goes through a monthly series of changes in order to get prepared to be able to give birth of a child. By each month, the ovulation takes place simultaneously with the hormonal changes which prepares the uterus for childbearing. When the ovulation happens and the egg is not fertilized, that is, when the gametes have not fused, the lining of the uterus is caused to be shed through the vaginaand.

The menstrual cycle can be divided into different phases based on the events as occurred in the ovary (ovarian cycle) and in the uterus (uterine cycle).
In Ovarian cycle we can see the follicular phase, ovulation and luteal phase.
In the uterine cycle, we can see the phases of Menstruation, Proliferative phase and Secretory phase.
In the Proliferative phase, the Estrogen hormone is responsible for building the lining of the uterus so that it can grow or proliferate. This phase of total menstrual cycle lasts from 6th day of Menstrual cycle till 14th day of cycle. That is, it lasts for 8 to 9 days.

Hence the correct answer is option ‘B’.

Note: During the Proliferative phase, the primary follicles in the ovary grow and simultaneously the endometrium of the uterus regenerate. These changes in the ovary and the uterus are induced by changes in the levels of pituitary and ovarian hormones.As we stated above that the Estrogen creates a new layer of endometrium (the inner epithelial layer of the uterus) in the uterus which is denoted as the proliferative endometrium.