[Campbell Biology P.1082] Which of the following statements correctly describes the role of e... | Practice Question

Which of the following statements correctly describes the role of estradiol in regulating FSH and LH secretion during the ovarian cycle?

  • A: Low concentrations of estradiol inhibit FSH and LH, while high concentrations stimulate them.
  • B: Both low and high concentrations of estradiol inhibit FSH and LH.
  • C: Both low and high concentrations of estradiol stimulate FSH and LH.
  • D: Low concentrations of estradiol stimulate FSH and LH, while high concentrations inhibit them.

Explanation

The text states: 'A low concentration of estradiol inhibits secretion of pituitary hormones, keeping the concentration of FSH and LH relatively low. When estradiol secretion by the follicle begins to rise steeply, the levels of FSH and LH increase markedly.'