Which of the following statements concerning control of ovarian hormone secretion is incorrect?
a. Low levels of estrogen inhibit the hypothalamus and anterior pituitary in negative-feedback fashion.
b. Under the influence of estrogen from developing follicles, FSH and LH secretion both continue to decline throughout the follicular phase.
c. Both estrogen and progesterone are required to completely inhibit tonic LH secretion.
d. A high level of estrogen stimulates LH secretion and initiates the LH surge.
e. Progesterone powerfully inhibits both FSH and LH secretion.
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Question 2) FSH stimulates which cells to synthesize estrogen from androgens?
a. sperm
b. spermatogonia
c. theca
d. granulosa
e. Sertoli
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Question 3) What hormone(s) is secreted by the corpus luteum?
a. FSH
b. estrogen
c. progesterone
d. LH
e. both estrogen and progesterone
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Question 4) What ovarian hormone(s) is secreted during the follicular phase of the ovarian cycle?
a. FSH
b. estrogen
c. progesterone
d. LH
e. both estrogen and progesterone
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Question 5) Which of the following does not occur during the follicular phase of the ovarian cycle?
a. the proliferative phase of the uterine cycle
b. the menstrual phase of the uterine cycle
c. estrogen secretion
d. progesterone secretion
e. FSH and LH secretion
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Question 6) Why are polar bodies formed in oogenesis?
a. to produce 4 gametes each with adequate amounts of nutrients.
b. to produce one functional gamete with maximal nutrient content.
c. to dispose of extra chromosomes.
d. both (a) and (b) above.
e. both (a) and (c) above.
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Question 7) Which ovarian hormone is secreted at negligible levels during the first half of the ovarian cycle?
a. estrogen
b. progesterone
c. LH
d. FSH
e. prolactin
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Question 8) The corpus luteum
a. develops from the polar body after ovulation.
b. develops from the fertilized ovum through a process of division and differentiation.
c. develops from the ruptured follicle after ovulation.
d. of pregnancy is stimulated by estrogen and progesterone secretion from the placenta.
e. is sloughed during menstruation if fertilization does not occur.
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Question 9) Ovulation is associated with the rapid rise of which ovarian hormone?
a. estrogen
b. FSH
c. LH
d. progesterone
e. prostaglandins
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Question 10) LH is responsible for
a. reinitiation of meiosis in the oocytes of developing follicles.
b. halting estrogen synthesis by the follicular cells.
c. triggering ovulation.
d. formation of the corpus luteum.
e. all of these answers.
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