Question

Write ‘True’ or ‘False’ for the statement given below:

Proliferative phase of the menstrual cycle is characterised by increased secretion of estrogens while luteal phase is characterised by increased secretion of progesterone.

• A. True
• B. False

Answer 1

The correct option is A True

Menstrual cycle

Menstrual cycle refers to the cyclic changes occurring in the reproductive tract of the female primates including human beings. It includes multiple phases like menstrual phase, follicular phase, ovulatory phase and secretory phase.

Follicular phase of menstrual cycle

During the 6 - 13 days of the cycle, the level of follicle stimulating hormone (FSH) keeps increasing and stimulates the development of the Graafian follicle. The developing Graafian follicle continues to release increasing levels of oestrogen which promotes the thickening and proliferation of the uterine lining. This is known as the follicular phase. By the end of this phase the Graafian follicle is fully matured.

Luteal phase of menstrual cycle

The luteal phase includes days 15 to 28. The ruptured Graafian follicle changes to corpus luteum which releases progesterone. Therefore, in the luteal phase there is an increased amount of progesterone.