Question

In human female, when does the ovulation occurs during menstrual cycle?

• A. At the end of proliferative phase
• B. In the middle of secretory phase
• C. Just before the end of secretory phase
• D. In the beginning of proliferative phase

Answer 1

The correct option is A At the end of proliferative phase

The follicular phase starts after the menstrual phase. The level of LH and FSH hormones increase in the ovary that leads to the proliferation of the follicles in the ovary. The FSH stimulates the secretion of estrogen that leads to the thickening of the linings of the endometrium.

On the 14th day, just after the finish of the proliferative phase, there is an increase in the level of LH that induces LH surge and causes follicular cells to rupture and release the oocyte.

So, the correct option is 'At the end of the proliferative phase'.