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The “pill” as a contraceptive agent is essentially a high dose of estrogen and p

ID: 67017 • Letter: T

Question

The “pill” as a contraceptive agent is essentially a high dose of estrogen and progesterone. This, in effect, tricks the _____ of the HPG axis to not produce _____, which in turn results in reduced secretion of ______ and ________ by the ________.

2 points

A. Hypothalamus, gonadotropin-releasing hormone, follicle-stimulating hormone, luteinizing hormone, anterior pituitary

B. Hypothalamus, follicle-stimulating hormone, gonadotropin-releasing hormone, luteinizing hormone, anterior pituitary

C. Hypothalamus, follicle-stimulating hormone, gonadotropin-releasing hormone, luteinizing hormone, gonad

D. Anterior pituitary, luteinizing hormone, follicle-stimulating hormone, gonadotropin-releasing hormone, hypothalamus

Explanation / Answer

A.Hypothalamus, gonadotropin-releasing hormone, follicle-stimulating hormone, luteinizing hormone, anterior pituitary

Hypothalamus is the key centre of the hypothalamic–pituitary–gonadal axis (HPG). It secretes GnRH which in turn stimulates FSH and LH from the anterior pituitary. FSH stimulates the maturation of germ cells and LH triggers ovulation in females. Hence ovulation is prevented which is the major effect of an emergency pill.