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A_REP-MALEC - Repr oducti ve System Male Dr S C Wi l l i...

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1 Reproductive System - Male Dr. S. C. Williams San Francisco State University Life Art 1994 
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2 I ntroduction What is it? Organ system designed for the maintenance & storage of genetic information Essential organs called testes produce gametes called spermatozoa Accessory organs include ducts (vas deferens, ejaculatory ducts, urethra) and glands that support sperm function (seminal vesicles, prostate, Cowper's) Other distinctive structures include scrotum, penis & secondary sexual characteristics Latent development with continuous functioning throughout life Life Art 1994
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3 Topics of Discussion Development of Urogenital systems Functions Primary organs (testes) Gametes (spermatozoa) Secondary (accessory) organs -- ducts, glands & penis Scrotum & spermatic cord Male pelvic anatomy & perineum
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4 Development of Urogenital System Urogenital ridge Mesonephric duct Mullerian duct Cloaca Metanephros Gonad Urogenital sinus Separation of rectum Perforation to exterior Crouch 1985
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5 Functions Packaging genetic information for next generation Production, storage & delivery of sperm Semen production Insemination Production of hormone testosterone Maintenance of secondary sex characteristics Life Art 1994
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6 Spermatozoa (Male Gametes) Regions: head, tail, acrosome Nucleic acid core, mitochondria, flagellum Spermatogenesis in seminiferous tubules of testis 300 million sperm produced each day Sperm maturation in rete testis Sperm storage in epididymis Tortora 2005
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