Mechanism of action of Combined OCP pills:: (A) Prevent fertilization, (B) Prevent release of ovum from ovary, (C) Prevent implantation of fertilized ovum, (D) Reduce sperm motility
Answer is B. Ans. (b) Prevent release of ovum from ovaryRef: K. Park 23rded. /501* Combined oral contraceptive pills act by inhibiting ovulation by suppressing the release of gonadotropins.* Continuous progesterone by OCPs which give negative feedback to GnRH, which decreases LH release and upto some extent FSH release also.* This prevents LH surge and as a result inhibits ovulation.