Which of the choices represent how combination hormonal birth control (containin

Question

Which of the choices represent how combination hormonal birth control (containing both progesterone and estrogen) prevents pregnancy? A) inhibits ovulation by reducing the release of GnRH, FSH, and LH by negative feedback. B) inhibits ovulation because the high estrogen and progesterone will stimulate the LH surge by positive feedback. C) blocks the production of HCG by the follicle so that pregnancy cannot be maintained. D) The estrogen and progesterone bind to sperm that enter the vagina and inactivate them. E) None of the above

Explanation / Answer

Q: Which of the choices represent how combination hormonal birth control (containing both progesterone and estrogen) prevents pregnancy?

Explanation: The combination hormone birth control works primarily by suppressing the secretion of gonadotropins - Gonadotropin-releasing hormone (GnRH), follicle stimulating hormone (FSH) and luteinizing hormone (LH) through negative feedback inhibition.

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