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Question
A contraceptive pill prevents ovulation by______.
A contraceptive pill prevents ovulation by______.
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Solution
The correct option is B inhibiting release of FSH & LH
Contraceptive pills contain progestogen. Progestogen is a synthetic form of progesterone which is artificially synthesised.
When these pills are taken orally, progestogen is released into the blood. The progestogen sends signals to the hypothalamus and decreases the secretion of GnRH (Gonadotropin releasing hormone). This is called negative feedback. This, in turn, leads to the decreased secretion of gonadotropins, FSH and LH hormones from pituitary.
FSH stimulates the development of follicles in the ovary and LH surge induces ovulation. Now due to the decreased secretion of both FSH and LH, the ovulation is prevented.
Pills neither block the fallopian tube nor cause the degeneration of the secondary oocyte.
Contraceptive pills contain progestogen. Progestogen is a synthetic form of progesterone which is artificially synthesised.
When these pills are taken orally, progestogen is released into the blood. The progestogen sends signals to the hypothalamus and decreases the secretion of GnRH (Gonadotropin releasing hormone). This is called negative feedback. This, in turn, leads to the decreased secretion of gonadotropins, FSH and LH hormones from pituitary.
FSH stimulates the development of follicles in the ovary and LH surge induces ovulation. Now due to the decreased secretion of both FSH and LH, the ovulation is prevented.
Pills neither block the fallopian tube nor cause the degeneration of the secondary oocyte.
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