Question

Which of the follwing is NOT a correct match?

• A. Proliferative phase - Rapid regeneration of myometrium and maturation of the Graafian follicle
• B. Secretory phase - Development of corpus luteum and increased secretion of progesterone
• C. Menstruction - Breakdown of endometrium and ovum is not fertilised
• D. Ovulation - LH and FSH attain peak and sharp fall in the secretion of progesterone

Answer 1

The correct option is D Ovulation - LH and FSH attain peak and sharp fall in the secretion of progesterone

• The proliferative phase is also called the follicular phase. It is one of the phases of the menstrual cycle during which graafian follicles inside the ovaries undergo maturation to prepare for ovulation. During this phase, rapid regeneration of the myometrium takes place.
• The second phase of the menstrual cycle is the secretory phase. It is also called luteal phase. During this phase, the follicle burst and develops into a small yellow structure called the corpus luteum. The corpus luteum develops during this phase. Progesterone secretion also increases during this phase.
• If the ovum is not fertilized, menstruation takes place. During menstruation, the endometrium which was prepared for the fetus breaks down.
• During ovulation, estrogen levels attain a peak. After this, the pituitary gland decreases the secretion of follicle-stimulating hormone (FSH) and begins the secretion of luteinizing hormone (LH). LH surge results into ovulation.

Thus, the correct answer is 'Ovulation - LH, and FSH attain peak and sharp fall in the secretion of progesterone.'