Gonadotropin secretion Ovarian events Thickness of endometrium Ovarian hormone secretion (a) ovarian cycle Days FSH Deve

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Gonadotropin Secretion Ovarian Events Thickness Of Endometrium Ovarian Hormone Secretion A Ovarian Cycle Days Fsh Deve 1 (68.19 KiB) Viewed 86 times

Gonadotropin secretion Ovarian events Thickness of endometrium Ovarian hormone secretion (a) ovarian cycle Days FSH Developing follicles Secondary Primary Days (b) Menstrual cycle -Menstrual fluid Estradiol Menstrual phase Tertiary O Follicular phase 9 Proliferative phase LH When the follicle ruptures, it collapses and bleeds. the antrum. As the clotted blood is slowly absorbed, ulosa and theca interna cells multiply and fill the um, and a dense bed of blood capillaries grows amid n. The ovulated follicle has now become a structure ed the corpus luteum," named for a yellow lipid that Ovulation 13 15 13 15 Corpus luteum Involution 21 ¹23 Luteal phase Progesterone Corpus albicans 25 New primordial follicles 19 21 ¹23 25 27 Secretory phase Premenstrual phase 28.13 The Female Sexual Cycle. (a) The ovarian cycle (events in the ovary). (b) The menstrual cycle (events in the uterus). The mone levels in part (a) are drawn to the same scale, but those in part (b) are not. The peak progesterone concentration is about as high as the peak estradiol concentration. APR LH stimulates the corpus luteum to continue growing and to secrete rising levels of estradiol and progesterone. There is a 10-fold increase in progesterone level (fig. 28.14) which has a crucial role in preparing the uterus for the poss bility of pregnancy. Notwithstanding its luteinizing role. ho of the cycl