Part C (3 of 5) - Follicular phase and the surge of estrogens 3 tries left Secretion of large amounts of estrogens by the dominant follicle directly and indirectly leads to which of the following? Select all that apply. A surge in LH release Increased release of GnRH Initiates a positive feedback mechanism within the hypothalamus and anterior pituitary Ovulation of the oocyte from the dominant follicle Check answer 2 parts remaining
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The question asks about the consequences of large amounts of estrogen secretion by the dominant follicle during the follicular phase, specifically what it directly and indirectly leads to. We need to select all applicable options. Show more…
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Which of the following are TRUE? Select one or more: At the beginning of the menstrual cycle, FSH and LH stimulate the development of tertiary ovarian follicles, which begin to produce estrogen. Because of increased estrogen from the ovarian follicles, an LH surge occurs, triggering ovulation. Mittelschmerz is the pain associated with ovulation. After ovulation, under the influence of LH, a gland is formed from the follicle cells left behind in the ovary. It is called the corpus luteum. The corpus luteum secretes progesterone and estrogen, preparing the endometrium for potential pregnancy. Increased levels of estrogen and progesterone inhibit FSH and LH secretion from the anterior pituitary. Which of the following are TRUE regarding the development of follicles? Select one or more: It takes about a year for a primordial follicle to develop and become a growing tertiary follicle. Primordial follicles are formed in utero. Tertiary follicles respond to FSH because they have a FSH receptor. Primary follicles also respond to FSH because they have a FSH receptor. Tertiary follicles die via atresia, but primordial follicles do not undergo atresia. When does positive feedback occur during the menstrual cycle? Select one: During menstruation, around the middle of the follicular phase, around the time of ovulation, during the luteal phase.
Krishna G.
Which of the listed events occurs last? - Estrogen produced by theca interna cells increases. - FSH and LH levels increase. - FSH/LH positive-feedback loops produce a series of FSH/LH surges. - Ovulation occurs. - GnRH secretion is stimulated.
Adi S.
Discuss the positive feedback mechanisms by LH and FSH during the follicular and ovulation phase of the ovarian cycle. a. The stimulation of the anterior pituitary by GHRH secretes the hormones LH and FSH. The increasing amounts of these hormones stimulate several follicles in the ovary to start growing, but only one of these matures to release the egg. b. The stimulation of the anterior pituitary by GnRH secretes the hormones LH and TSH. The increasing amounts of these hormones stimulate several follicles in the ovary to start growing, but only one of these matures to release the egg. c. The stimulation of the anterior pituitary by GnRH triggers the secretion of the hormones LH and FSH. The increasing amounts of these hormones stimulate several follicles in the ovary to start growing, but only one of these matures to release the egg. d. The stimulation of the anterior pituitary by GHRH secretes the hormones LH and TSH. The increasing amounts of these hormones stimulate several follicles in the ovary to start growing, but only one of these matures to release the egg.
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