Test 2.1

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Anonymous
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1881
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Test 2.1
Updated:
2009-11-29 21:59:21
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male reproductive system / A n P of urinary system
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URT study help
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  1. what is the purpose of the male genitalia system?
    to produce, nourish and transport mature sperm for reproduction
  2. what are the three cylindrical structures within the penile body?
    the corpus spongiosum and corpora cavernosa
  3. what does the corpus spongiosum house?
    the urethra
  4. the distal end of the corpus spongiosum is known as the
    glans penis
  5. what are the three functions of the penis
    • -pasageway for the ejaculation of semen
    • -excretion of urine
    • -sexual organ
  6. emission
    the discharge of a small amount of semen before ejaculation, caused by contractions of the vas, seminal vesicles, ejaculatory ducts and prostate
  7. the cutaneous sac that lies below the pubic bone
    scrotum
  8. raphe
    the medium ridge that marks the separation of the hemiscrotums
  9. dartos muscle
    contracts and wrinkles the skin of the scrotum and elevates the testis
  10. functions of the scrotum
    houses and supports the testes, the lower portion of the spermatic cord, and epididymis; regulates tempurature
  11. approx measurements of the testes
    5 cm long and 2.5 cm in diameter, left is lower than right
  12. forms a fibrous sac that encases the testis
    tunica vaginalis
  13. tunica albuginea
    a white, fibrous structure that covers the testis; divides the testis into 200-300 lobules containing seminiferous tubules
  14. tunica vasculosa
    system of blood vessels that provide nourishment to the seminiferous tubules ant interstitial cells
  15. the functional unit of the testis and constitute approx 75% of testicular mass
    seminiferous tubules
  16. spermatagonia
    the most primitive form of germ cell, lies dormant until puberty
  17. spermatids
    third phase of maturation of the sperm cell
  18. function of the testicles
    production of sperm and testosterone
  19. comma or crescent shaped structure that is attatched to the posterior border of each testis
    epididymis
  20. function of the epididymus
    provides maturation, storage, and transportation of sperm through peristaltic contraction
  21. a firm cylindrical tube extending from the termination of the epididymis tot he ejaculatory duct near the base of the prostate
    vas deferens
  22. the supporting structure of the male reproductive system that ascends out of the scrotum
    spermatic cord
  23. what does the spermatic cord consist of?
    the vas deferens, testicular artery, testicular vein, autonomic nerves, cremaster muscle and lymphatic vessels
  24. pouch like structure that lies posterior to the base of the bladder, fluid secretion constitutes about 60% of semen volume
    seminal vesicles
  25. function of the seminal vesicles
    secrete alkaline, viscous fluid that contains fructose, prostaglandins and clotting proteins. prostaglandins contribute to sperm motility and viability
  26. bulbourethral glands are also called
    Cowper's glands
  27. function of the bulbourethral gland
    lubricates the end of the penis and lining of the urethra, neutralizes acid from the urine in the urethra
  28. prostatic secretions make up about what percent of semen volume?
    25%
  29. prostate function
    secrete a milky, slightly acidic fluid that contributes to sperm motility and viability
  30. hormone produced in the pituitary gland that stimulates testosterone production
    follicle stimulating hormone (fsh)
  31. hormone produced by the pituitary gland that contributes to testosterone production
    luteinizing hormone (LH)
  32. cells in the seminiferous tubules that nurture maturing spermatids
    sertoli cells
  33. an immature spermatozoon produced by meiotic division of a secondary spermatocyte
    spermatid
  34. develops from spermatogonia cell in the seminiferous tubule and has 46 chromosomes
    primary spermatocyte
  35. develops from mitotic division of a primary spermatocyte, has 23 chromosomes
    secondary spermacyte
  36. process of maturation of a spermatogonia into a spermatozoon
    spermiogenesis
  37. hormone produced by the testis that affects spermiogenesis and secondary male characteristics
    testosterone

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