Lect42-45powerpoint

Lect42-45powerpoint - 1 Reproductive Physiology Lecture 42:...

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Unformatted text preview: 1 Reproductive Physiology Lecture 42: Principles of Reproductive Physiology Lecture 43: Male Reproductive System Lecture 44: Female Reproductive System - Ovarian Cycle Lecture 45: Female Reproductive System - Pregnancy Lecture 42: Principles of Reproductive Physiology Reading: Ch 20, introduction 2 Reproductive system- Does not contribute to homeostasis- Is not essential for survival of the individual- Is essential for perpetuating the species- Influences individuals psychology and emotional makeup- Has profound social ramifications i.e. population density and resource management Reproductive physiology study of the interactions among the reproductive organs, hypothalamus, anterior pituitary, and target cells of the sex hormones that collectively lead to the production and union of male and female gametes, and ultimately the production and nourishment of offspring. Primary reproductive organs (gonads): testes in male; ovaries in female 1) produce gametes: sperm in males, ova (eggs) in females 2) secrete sex hormones: testosterone in males, estrogen and progesterone in females Secondary sexual characteristics External characteristics not directly involved with reproductive physiology e.g. body configuration and hair distribution 3 Functions and anatomy of the male reproductive tracts 1) Sperm and semen production 2) Deposition in female Functions and anatomy of the female reproductive tracts 1) oogenesis 2) reception of sperm 3) fertilization (conception) 4) gestation (pregnancy) 5) parturition (labor and delivery) 6) lactation 4 Chromosomal distribution in sexual reproduction Homologous recombination during Meiosis 5 Sex differentiation Genetic sex Gonadal sex Phenotypic sex Sexual differentiation of the external genitalia 6 Errors in sex differentiation- testes in genetic male fails to secrete hormones: anatomical female (sterile)- lack of enzyme for converting testosterone to DHT: genetic and gonadal male with male repro tract and female external genitalia...
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Lect42-45powerpoint - 1 Reproductive Physiology Lecture 42:...

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