18. During the ovarian cycle, which of the following events occurs as a direct result of the surge in luteinizing hormone? (ONLY ONE ANSWER CHOICE) A. formation of astral spaces and the secondary follicle B. formation of a late primary follicle and its theca interna C. formation of the first polar body and arrest in metaphase D. formation of the second polar body and completion of meiosis ii E. mitotic division of oogonia and arrest in prophase
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The follicle that eventually releases the egg is called the dominant follicle. The surge in luteinizing hormone (LH) triggers ovulation, which is the release of the mature egg from the dominant follicle. Therefore, the correct answer is D. formation of the second Show more…
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Which of the following statements about the ovarian and uterine cycles is false? a. Falling estrogen and progesterone levels induce menstruation. b. A sudden rise in LH induces ovulation. $c .$ Estrogen levels rise in the first half of the ovarian cycle and progesterone levels rise in the second half. $d .$ If fertilization occurs, the corpus luteum secretes hCG. e. Estrogen is produced by follicle cells
Which of the following statements about the ovarian and uterine cycles is not true? a. Falling estrogen and progesterone levels induce menstruation. b. A sudden rise in LH induces ovulation. c. Estrogen levels reach highest levels in the follicular phase and progesterone reaches highest levels in the luteal phase of the ovarian cycle. d. If fertilization occurs, the corpus luteum secretes hCG. e. Estrogen is produced by follicle cells.
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