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Preview/Review of Women's Reproductive Biology

by: Jade Maynard

Preview/Review of Women's Reproductive Biology GWSS 357 A

Marketplace > University of Washington > Women and Gender studies > GWSS 357 A > Preview Review of Women s Reproductive Biology
Jade Maynard
GPA 3.93
Psychobiology of Women
Nancy Kenney

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About this Document

Readings for October 15-20
Psychobiology of Women
Nancy Kenney
Class Notes
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Popular in Psychobiology of Women

Popular in Women and Gender studies

This 2 page Class Notes was uploaded by Jade Maynard on Monday October 12, 2015. The Class Notes belongs to GWSS 357 A at University of Washington taught by Nancy Kenney in Summer 2015. Since its upload, it has received 29 views. For similar materials see Psychobiology of Women in Women and Gender studies at University of Washington.


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Date Created: 10/12/15
PreviewReview of Women s Reproductive Biology Pages 17 0 Medical options and biological understandings of women s bodies have increased in recent years but individual women s knowledge of their bodies and their options is lagging behind 0 Causes The limitations of the educational system the stigma surrounding normal biological functions and the belief that science and medicine are the province of 111611 0 The average monthly cycle is 28 days long but the normal range is 2135 days 0 First Half also known as the preovulatory or follicular phase First day of menses up to ovulation the release of the ovum from the ovary O O O O Hypothalamus released gonadotropin releasing hormone GnRH Stimulates the anterior pituitary to release gonadotropins FSH and LH FSH stimulates the development of ovarian follicles LH stimulates production of estrogens by the follicles When the ovum contained by the Graafian follicle is mature a large amount of estrogen is secreted triggering the release of GnRH FSH and LH stimulating ovulation 0 Second Half also known as the postovulatory or luteal phase From ovulation to the first day of the next menstrual bleeding lasts 14 or 2 days 0 LH transforms remaining cells of the ruptured follicle into the corpus luteum and stimulates it to produce estrogens 0 Prolactin from the anterior pituitary stimulates the production of progesterone by the corpus luteum O Progesterone halts FSH production stopping the development of additional follicles 0 If the ovum isn t fertilized the corpus luteum dies and progesterone and estrogen levels drop 0 Ovaries 0 Produce estrogen 0 The most prevalent type of estrogen is estradiol which stimulates the growth of the endometrium the lining of the uterus O Ovulation consists of the rupturing of the Graafian follicle and the release of the ovum 0 After ovulation the remaining Graafian cells group together to form a hormoneproducing structure called the corpus luteum which produces progesterone and estrogen 0 If the ovum isn t fertilized the corpus luteum dies after 14 or 2 days 0 Then the cycle begins again Pages 911 0 The Uterus O Hollow muscular organ for housing the fetus during development 0000 O O Fundus The upper wider portion Cervix Narrow section which extends into the vagina Cervical Os The opening between the vagina and the uterus During menses the cells lining the uterus the endometrium die and are removed from the body along with menstrual uid Proliferative Phase As estrogen levels increase during the preovulatory phase the endometrium rebuilds itself Secretory Phase After ovulation endometrium cells fill with glycogen and fats which provide nutriment for the fertilized ovum as well as a soft and protective place In the absence of progesterone and estrogen the endometrium dies and the cycle starts again At ovulation uid produced by cervical cells facilitates conception by making it easier for the sperm to travel into the uterus During the luteal phase this uid is thick and pasty known as hostile cervical mucus because it is difficult for sperm to swim through 0 Fallopian Tubes 0 O Tubes that transport the ovum from the ovary to the uterus Inside the Fallopian tube the ovum moves toward the ampullaisthmus junction where it remains for two days during which fertilization usually takes place Obstruction of Fallopian tubes is a common cause of infertility


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