Which of the following is not a mechanism of action of OCPs-
Correct Answer: None of the above
Description: Ans. is 'd' i.e., None of the above o All are true. o Mechanism of action of oral contraceptive pills: i) Inhibition of ovulation :Both estrogen and progesterone act on HPO axis. The release of GnRH from the hypothalamus is prevented through a negative feedback mechanism. ii) Producing static endometrial hypoplasia: There is stromal edema, decidual reaction, and regression of the glands making endometrium non-receptive to the embryo. iii) Alteration of the character of the cervical mucus (thick, viscid and scanty) so as to prevent sperm penetration. iv) Interferes with tubal motility and alters tubal transport.
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Gynaecology & Obstetrics
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