Lecture 10 - Lecture10 16:55 HORMONES Twohormones Estrogen...

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Gender and Women Studies Lecture 10 16:55 HORMONES: Are released by the endocrine glands Travel through the bloodstream Affect target organs and cells  Are effective in very small quantities  Two hormones Estrogen Physiological effects Vagina  Epithelium becomes thicker Vaginal secretions are more acidic Cervix Cervical glands produce a clear, watery secretion with little mucous and low viscosity  Right environment to facilitate the sperm to get into the uterus  Uterus Endometrium is stimulated to grow Increase number of cells (hyperplasia) Increase in size of existing cells (hypertrophy) Slight increase in uterine contractions  Fallopian tubes
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Lining of the tubes becomes the right environment for fertilization  Tubes are thicker but slippery  Allow the egg and sperm to move together toward the uterus The cilia beat towards the uterus  Pushing the egg if it fertilized or if it is not Breast Growth of duct tissue Increase fat disposition  Enlarge breast size  Bones Stronger bones Heart/circulatory system Lowers blood cholesterol May protect against heart disease Progesterone  Physiological effects  Vagina No dramatic changes Cervix Cervical mucous becomes sticky  Prevents passage of sperm through the cervical canal 
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