Slate Training Module 2

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Author:
bwallis
ID:
212793
Filename:
Slate Training Module 2
Updated:
2013-04-19 11:05:56
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Testopel
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Description:
Module 2
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  1. Purpose of Male Reproductive System (3)
    • Produce, maintain, and transport semen
    • Insert semen into female tract
    • produce and secrete male sex hormones responsible for maintaining male reproductive system
  2. Ejaculatory Ducts (2)
    • Ducts that carry semen into urethra
    • formed by fusion of vas deferens and seminal vesicles
  3. Seminal Vesicles
    • sac-like pouches that attach to the vas deferens near base of bladder
    • produce sugar rich fluid that provides sperm with a source of energy to move
  4. Anterior Pituitary Gland (2)
    • Front lobe of pituitary
    • produces corresponding pulse of LH
  5. Prostate Gland (2)
    • walnut sized structure located below the urinary bladder in front of the rectum
    • contributes additional fluid to ejaculate
  6. Bulbourethral Gland (3)
    • Also called Cowper's glands
    • pea-sized structures located on the sides of the urethra just below prostate
    • provides slick fluid to urethra
  7. HPG Axis
    Male sexual development and function that depend on Hypothalmic Pituitary Gonad
  8. GnRH (2)
    • Gonadtropin-releasing Hormone produced by hypothalamus
    • released in a pulsatile fashion
  9. Urethra
    Carries sperm and urine through penis and out of body
  10. Penis - 3 parts
    • Root
    • Shaft
    • Glans
  11. Scrotum (2)
    • climate controlled sac that holds testes
    • testes must be slightly cooler than body temp for normal sperm production
  12. Wolffian Duct
    In embryo, eventually develops into epididymis, seminal vesicles, and vas deferens
  13. Metabolic effects (function) of Testosterone and DHT (4)
    • Increasing protein anabolism
    • nitrogen retention
    • increasing bone density and muscle mass
    • modulating the immune system
  14. Estradiol (4)
    • E2
    • sex hormone
    • main inhibitor of LH production
    • also inhibits FSH
  15. Spermatogenesis
    process by which male primordial germ cells undergo meiosis and produce a number of cells called spermatoza
  16. inhibin B (2)
    • Peptide produced by Sertoli cells
    • inhibit FSH production
  17. Y Chromosome
    responsible for development and growth of testes in embryo
  18. DHT (2)
    • Dihydrotestosterone
    • 4-8% of testosterone is converted to DHT
  19. Albumin (2)
    • main function is to regulate the colloidal osmotic pressure of blood
    • main protein of human plasma
  20. SHBG (2)
    • Sex Hormone-Binding Globulin
    • binds androgens and estrogens
  21. DHEA (2)
    • De Hydro Epi Androsterone
    • Synthesizes testosterone from cholesterol
  22. FSH (3)
    • Follicle Stimulating Hormone
    • regulates development, growth, pubertal maturation and reproductive process of the body
    • FH and LH act synergistically in reproduction
  23. Leydig Cell (2)
    • produces testosterone in the presence of LH
    • produces 5 and 10 mg of testosterone daily
  24. Mechanisms of Puberty (3)
    • Hypothalamus becomes less sensitive to the inhibitory effects of sex hormones
    • LH and FSH secretions increase stimulating testosterone initially only during sleep
    • increased testosterone levels in boys cause pubertal changes (enlargement of penis and testes, deepening of voice, facial/pubic hair, increase in muscle mass, strength, height)
  25. Mechanisms of aging Man - what happens? (4)
    • ability to produce Testosterone declines
    • SHBG increases which reduces amount of Free Testosterone in blood
    • At age 30 - total testosterone declines 1%/year
    • At age 50 - 30% of men are hypogonadal
  26. LH (3)



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    • Luteinizing hormone also known as lutropin
    • produced in anterior pituitary gland
    • stimulates Leydig cell production of Testosterone



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