Question

Given below are few statements with reference to the major events in the menstrual cycle of a human female:

• During the follicular phase, the primary follicles grow to become a Graafian follicle.
• Gonadotropins FSH and progesterone stimulate follicular development during the follicular phase.
• LH surge induces rupture of Graafian follicle thereby releasing the corpus luteum.
• Progesterone released by corpus luteum is essential for maintenance of endometrium.
• Both LH and progesterone attain a peak level in the middle of the cycle.

Choose the option with all true statements from the given options:

• A. (i), (ii) and (iv)
• B. (ii), (iii) and (v)
• C. (ii), (iv) and (v)
• D. (i), (iii) and (iv)

Hint:

Remember — LH surge triggers ovulation and corpus luteum formation; progesterone maintains the endometrium after ovulation.

Answer 1

The Correct Option is D

Statements (i), (iii), and (iv) are correct:

• (i) During the follicular phase, the primary follicles indeed grow to become a Graafian follicle.
• (iii) LH surge is responsible for inducing rupture of the Graafian follicle, leading to the release of the ovum and formation of the corpus luteum.
• (iv) Progesterone secreted by the corpus luteum is essential for the maintenance of the endometrium.

Statement (ii) is incorrect because progesterone is not involved in follicular development — it acts after ovulation. Statement (v) is incorrect as only LH peaks in the middle of the cycle, while progesterone peaks later in the luteal phase.