Qtr 4 Function 4b Exam 1 Male reproductive system

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bradley.knox
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227863
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Qtr 4 Function 4b Exam 1 Male reproductive system
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2013-07-22 21:12:58
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male reproductive system
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male reproductive system
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  1. What is the most common birth defect of the male genitalia?
    Cryptorchidism
  2. What hormone stimulates spermatogenesis, and where are its receptors found?
    • Follicle stimulating hormone
    • Sertoli cells with in seminiferous tubules
  3. What cells secrete testosterone, where are they located, and what hormone stimulates secretion?
    • Leydig cells
    • interstitial tissue between seminiferous tubules
    • LH
  4. What are the order of events from the beginning of spermatogenesis to ejaculation?
    FSH-> sertoli cells -> spermatozoa (64 days)-> epididymus (29 days, spermiogenesis)-> Vas Deferens-> seminal vesicle-> ejaculatory duct-> prostetic urethra-> membranous urethra-> penile urethra
  5. What are the main functions of the sertoli cells?
    • Spermatogenesis (support & protect)
    • secrete inhibin 
    • mediates testosterone and FSH
  6. What does the prostate gland add to semen?
    Alkaline fluid
  7. What percent of semen comes from the vas deferens, seminal vesicles, and prostate respectively?
    • Vas deferens: 10 percent
    • Seminal vesicles: 60 percent
    • prostate gland: 30 percent
  8. ________ occurs in the seminiferous tubules.
    spermatogenesis
  9. ________ starts to undergo meiosis?
    spermatocyte
  10. What does testosterone regulate via negative feedback?
    • Hypothalamus
    •    -GnRH
    • Pituitary
    •    -LH
    •    -FSH
  11. What hormone causes the vas deferens to contract during ejaculation?
    Oxytocin
  12. What innervation is responsible for gaining and maintaining an erection?
    S2,3,4 Parasympathetic
  13. What is the function of the bulbospongiosus?
    Contracts to expel semen
  14. Where do seminal vesicles empty into?
    Ampulla of Vas Deferens
  15. Where does the mucus inside the urethra come from?
    • Urethral glands
    • Bulbourethral (cowper's gland)
  16. What cells convert testosterone into estrogen?
    Sertoli cells convert it from testosterone
  17. What is inflammation of the spermatic cord called?
    Funiculitis
  18. Accumulation of fluid in the tunica vaginalis
    Hydrocele
  19. Varicosity of the pampiniform plexus veins
    Varicocele
  20. Accumulation of lymph in the testi
    chylocele
  21. What is prehn's sign?
    • elevation of the testi reduces pain
    • indication of epididymitis
  22. What type of tumor causes an increase in serum alpha feto protein?
    endodermal sinus / yolk sac tumor
  23. What type of tumor testicular tumor presents with pain, metastasis, and increased hCG?
    Embyonal carcinoma
  24. What hormone is increased due to the effects of seminoma?
    HCG
  25. What is the most common type of testicular cancer?
    seminoma (germ cell tumor)
  26. What testicular tumor is found mainly in infancy and earlychildhood?
    • endodermal sinus tumor 
    • AKA: Yolk sac tumor
  27. Faulty closure of urethral fold
    hypospadias (ventral surface)
  28. What is more common hypo or epi spadias?
    hypospadias
  29. Defect in genital tubercle
    epispadias (urethra dorsal surface)
  30. tight unretracted foreskin
    phimosis
  31. tight retracted foreskin
    paraphimosis
  32. inflammation of the glans penis
    balanitis
  33. What virus is associated with squamous cell carcinoma of the penis?
    HPV
  34. What symptoms are associated with acute bacterial prostatitis
    • fever
    • dysuria
  35. what symptoms are associated with chronic prostatitis?
    • low back pain
    • dysuria
    • suprapubic discomfort
  36. What is the most common form of prostatitis?
    abacterial
  37. What is the most common site of benign prostetic hyperplasia?
    median and lateral lobes (periurethral zone / central zone)
  38. What is pyelonephritis?
    kidney infection
  39. What is the most likley cause of prostate carcinoma?
    imbalance of estrogens and androgens
  40. What is the most common site of prostate carcinoma?
    posterior lobe
  41. What type of innervation is needed for ejaculation?
    sympathetic
  42. What enzymes does sperm carry to penetrate the ovum?
    • Hyaluronidase
    • proteolytic
  43. What is the max sperm count to be considered to have oligospermia?
    20million /mL

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