Question

Select the correct statement regarding the menstrual cycle.

• A. A rapid secretion of FSH leads to the rupture of the Graafian follicle and the ovum is released.
• B. Estrogen secreted by the corpus luteum is necessary for the maintenance of the endometrium.
• C. During the follicular phase, the primary follicles change into the Graafian follicle, which is transformed into corpus luteum post ovulation.
• D. All of the above

Answer 1

Answer: (C)

During the follicular phase, the primary follicles in the ovary grow to become a fully mature Graafian follicle and simultaneously the endometrium of uterus regenerates through proliferation.
Ovulation is followed by the luteal phase where the Graafian follicle is transformed into corpus luteum.
Rapid secretion of LH leading to its maximum level during the mid-cycle called LH surge induces rupture of Graafian follicle, and thereby, the release of the ovum.
The corpus luteum secretes large amounts of progesterone, which is essential for the maintenance of the endometrium.