PHIS 206 1st EditionLecture 37Outline of Last Lecture I. Reproductory SystemII. Secondary CharacteristicsIII. MaleIV. FemaleV. Temperature MaintainedVI. HistoryVII. Testes into ScrotumVIII. Effects of TestosteroneIX. Male Secondary Sex CharacteristicsX. Testosterone Anabolic EffectXI. GonadotropinsXII. PubertyXIII. OvariesXIV. Ovarian CycleXV. HypothalamusXVI. Uterine (menstrual cycle) Outline of Current Lecture I. Proliferative PhaseII. Week After OvulationIII. 1 Uteran CycleIV. PlacentaV. Milk ProductionVI. Hypothalamic Secretion of Prolactin-Releasing HormoneCurrent LectureI. Proliferative Phase-High levels of estrogen affects uterus-2 Parts of Uterus (we are concerned with in this class) myometrium: increase # of receptors endometrium: increase vascularization of glycogeno gets bigger-continues beyond ovulation high levels of estrogen decrease progesterone decreases -prostaglandins: secreted throughout uterusThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute. During ovulation in uterus: shuts down blood supply in endometrium causes contraction in myometrium-1st day of flow: Day 1 in Uteran Cycle -Ovarian Cycle: 7 days after ovulation ovarian causes uteran cycleII. Week After Ovulation-new follicular phase begins -age 40-45 follicles run out: menopauseIII. 1 Uteran Cycle-100 mL (half a can of Coke) blood lossIV. Placenta-if ovum is fertilized and finds its way through the duct-placenta: highly vascularized no mixing of maternal _ fetal blood fetal hemoglobin has a higher affinity for oxygen than maternal hemoglobin-blood supply mixes: complications of incompatible blood types come in-placenta secretes chorionic gonadotrpoin (HCG) HCG: stimulates secretion of estrogen + progesterone throughout pregnancyo prevents endometrium from degeneratingV. Milk Production-pregnancy: high production of estrogen stimulates production of Prolactin Prolactin + HCG stimulate production of glands to produce milk release of milk is separate -Prolactin: stores milk -Oxytocin: typically secreted in large amounts during/near delivery time causes release of milkVI. Hypothalamic Secretion of Prolactin-Releasing Hormone-reflex can be inhibited by stress-milk release can be conditioned besides
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