Outline Female sexual physiology and health concerns

Outline Female sexual physiology and health concerns -...

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Female Sexual Anatomy and Physiology Anatomy = Structures Physiology = Function of Structures
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Menstruation Myths – lots Rituals Meanings often ambiguous Menstrual huts in some cultures –menstruating women are isolated from rest of community Customs can provide solidarity, influence and autonomy –Some Native American tribes, a time when women most powerful Menarche (initial onset) age 11-15 Timing related to heredity, health, altitude Menstrual cycle ends at menopause between 45-55
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Menstruation Menstrual cycle Uterus lining prepares for implantation of fertilized ovum. If no conception, lining sloughs off and is discharged. Discharge is the flow that lasts from 2 to 6 days Cycle measured from first day of flow until day before next flow begins. Volume varies (6 to 8 ounces) duration varies (24 to 42 days) menstrual synchrony –interesting phenomenon where women who live together develop similar cycles. Trigger related to sense of smell.
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Menstruation Ovulation timing and cycle length. Regardless of the length of the cycle, ovulation occurs 14 days, plus or minus 2 days before menstruation.
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Menstruation The menstrual cycle hypothalamus monitors hormone levels in blood releasing chemicals (GnRH) that stimulates pituitary in brain Then pituitary produces: Follicle Stimulating Hormone –FSH FSH stimulates ovaries to produce estrogen and causes ova to mature in follicles within ovaries Luteinizing Hormone –LH LH stimulates development of corpus luteum Corpus luteum is part of follicle that remains after egg released Corpus luteum produces progesterone
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Menstruation The menstrual cycle is self regulating A negative feedback mechanism is how it is regulated Each hormone is secreted until organ it acts on is stimulated Then organ releases substance back through system to reduce hormone activity
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