PHY-C Female Hormones
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Questions and Answers

Which hormone is responsible for promoting lactation?

  • Progesterone
  • Estrogen
  • Cortisol
  • Prolactin (correct)
  • What hormone increases the sensitivity of the uterus to contractile stimuli during parturition?

  • Prolactin
  • Oxytocin
  • Estriol
  • Cortisol (correct)
  • Which hormone causes the softening, thinning, and dilation of the cervix early in labor?

  • Progesterone
  • Oxytocin
  • Prolactin
  • Estrogen (correct)
  • During pregnancy, why does lactation not occur despite high prolactin levels?

    <p>Progesterone inhibits prolactin action</p> Signup and view all the answers

    What hormone is primarily responsible for stimulating milk ejection during breastfeeding?

    <p>Oxytocin</p> Signup and view all the answers

    Which organ produces estriol during pregnancy?

    <p>Placenta</p> Signup and view all the answers

    What is the main role of estrogen during pregnancy?

    <p>Stimulates the growth of fetal tissues</p> Signup and view all the answers

    Which hormone maintains the endometrial lining of the uterus during pregnancy?

    <p>Progesterone</p> Signup and view all the answers

    Where is progesterone transformed from cholesterol during pregnancy?

    <p>Placenta</p> Signup and view all the answers

    Which enzyme converts testosterone into estradiol and androstenedione in pregnancy?

    <p>Aromatase</p> Signup and view all the answers

    What is the main function of estriol in pregnancy?

    <p>Transforming cholesterol into pregnenolone</p> Signup and view all the answers

    Which hormone has the highest potency among estradiol, estrone, and estriol?

    <p>Estradiol</p> Signup and view all the answers

    What hormone inhibits GnRH secretion, resulting in suppression of ovulation during lactation?

    <p>Prolactin</p> Signup and view all the answers

    Which hormone stimulates the secretion of both oxytocin and prolactin during lactation?

    <p>Suckling</p> Signup and view all the answers

    What hormonal changes lead to the cessation of menstrual cycles in menopause?

    <p>Decreased LH and FSH levels</p> Signup and view all the answers

    Which hormone's secretion gradually declines and eventually ceases due to the reduction in functioning ovarian follicles?

    <p>Estrogen</p> Signup and view all the answers

    Which hormone is associated with accelerated bone loss and decreased breast mass during menopause?

    <p>Estrogen</p> Signup and view all the answers

    Which hormone is primarily responsible for stimulating milk production in the mammary glands postpartum?

    <p>Prolactin</p> Signup and view all the answers

    Estrogen stimulates the contraction of the uterine muscle.

    <p>False</p> Signup and view all the answers

    Progesterone maintains the endometrial lining of the uterus during pregnancy.

    <p>True</p> Signup and view all the answers

    Prostaglandins are not involved in uterine function.

    <p>False</p> Signup and view all the answers

    Hormonal changes after delivery lead to an increase in estrogen and progesterone levels.

    <p>False</p> Signup and view all the answers

    Oxytocin's role in labor is to stimulate milk production.

    <p>False</p> Signup and view all the answers

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