Question

The progesterone level rises in which phase of menstrual cycle?

• A. Menstrual phase
• B. Proliferative phase
• C. Secretory phase
• D. Maturation phase

Answer 1

Answer: (C)

Secretory phase

The most important funtion of progesterone is to prepare the uterus for pregnancy, i.e., implantation and support of a fertilized egg. This hormone is produced increasingly by the corpus luteum in the luteal phase after the rupture of the follicle to release the ovum. Progesterone also stimulates the lining of the uterus to secrete certain hormones for the thickening and maintenance of the endometrium. For this reason the luteal phase is also called the 'secretory phase' where progesterone levels reach a peak. So, the correct answer is 'Secretory phase'.