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Tony Serino, Ph.D. Biology Department Misericordia University
Reproduction: Female Tony Serino, Ph.D. Biology Department Misericordia University
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Female Reproduction Gonad: Ovary Gametes: Ova Duct System:
Transport ovum from ovary to uterus Site of fertilization; Receive and transport sperm to ovum Capacitate sperm House and support fetus Deliver fetus Supporting Structures Sensory and protective functions
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Female External Genitalia
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Female Anatomy (oviduct or Fallopian tube) Vulva
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Development of Ovum and Follicle
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Oviduct (Uterine or Fallopian tube)
Ampulla Isthmus
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Uterine Layers Perimetrium
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Female Hormones Hypothalamus secretes GnRH
Anterior Pituitary secretes FSH and LH Theca cells of ovary secrete estrogens Granulosa cells secrete inhibin Luteal cells (modified granulosa cells) secrete progesterone
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Fig 17.19.jpg Converted by aromatase
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Fig 17.06.jpg
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Ovarian and Uterine Cycles
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Female Sexual Response
Arousal Triggered by: Touching of genital skin and other areas of skin Mechanical stimulation of pressure receptors in clitoris Erotic sights, sounds, and smells Thoughts and memories Increased myotonia throughout body, BP, breathing and HR Sexual stimulation leads to accumulation of blood in vaginal tissues, labia minora, clitoris, and breasts (including areola and nipple) Vestibular glands secrete lubricating fluid into vestibule and mucous is secreted into vagina The vagina may expand its width and some of its length Plateau Increased swelling of vagina and labia minora, and become more sensitive Clitoris may withdraw into its hood (prepuce) Orgasm Pleasurable rhythmic contractions of uterus, vagina and clitoris Followed by relaxation but no refractory period
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Development of Reproductive System
Gonads of embryo are sexually indistinguishable Two sets of ducts present: Mullerian (female) and Wolfian (male) Female pattern will develop as default If XY, then testes develop and secrete testosterone Testosterone stimulates growth of male pattern and degeneration of female pattern
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Male Development 17.03a.jpg
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Female Development 17.03b.jpg
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Reproductive Development
Much of the system’s development occurs after birth –during adolescence Generation of functional sex cells and secondary characteristics dependent on fully functional gonads in both sexes
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Pregnancy
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Fig 17.23.jpg
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Pregnant Uterus 17.27a.jpg
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Fig 17.28.jpg
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17.29a.jpg
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Labor: Dilation and Effacement
17.29b.jpg
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Birth: Fetus Expulsion
17.29c.jpg
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Fig d 17.29d.jpg
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After birth 17.29e.jpg
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Positive Feedback for Birth
17.30.jpg
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Lactation 17.31.jpg
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Fig 17.32.jpg
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17.11.jpg
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Contraception Methods
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Menopause Cessation of reproductive function with age
Occurs only in women (men slow down function but do not cease unless pathology occurs) Women see steep decline in pituitary and ovarian hormone production that eventually stops both ovarian and uterine cycles Woman said to complete menopause after one year without menses
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