Integrative Biology 140

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jeannette_ruiz
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7252
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Integrative Biology 140
Updated:
2010-02-18 00:38:18
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human reproduction
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human reproduction
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  1. Which of the following is true about protein and peptide hormones?
    A.pass through the phospholipids bilayer of the plasma membrane
    B.receptors are located within the cytoplasm or nucleus of target cells
    C.when hormones bind the receptor a biochemical change is triggered in the cell cytoplasm causing the release of a 2n messenger (cAMP)
    D.include the androgens,estrogens and progestins
    E.The initial action on the physiology of the body is hours or days
    C.when hormones bind the receptor a biochemical change is triggered in the cell cytoplasm causing the release of a 2n messenger (cAMP)
  2. Which of the following is true about hormones?
    A.
    only act in the part of the body from where they are release
    B. signal certain tissues to grow or change their cellular activity
    C.
    act independently in the central nervous system
    D.
    all are derived from cholesterol
    E.
    are always proteins or peptides
    B. signal certain tissues to grow or change their cellular activity
    (this multiple choice question has been scrambled)
  3. Which of the following is false about steroid binding globulins?
    a.
    steroid binding globulins are carrier protiens that attach to steroid hormones
    b. bound steroids affect target cells
    c.2-3% of estradiol is free in the blood
    d.
    concentration of steroid binding proteins change with pregnancy and obesity
    e. binding globulins regulates the availability of steroid hormones
    e. binding globulins regulates the availability of steroid hormones
  4. Which of the following is false about melatonin?
    A
    .high doses can stimulate reproductive gonadal systems in males and females
    B.levels of melatonin in blood of pre-pubertal chuldren drop markedly just before the onset of puberty
    C.causes a mild sedative effect
    D.
    dark exposure increases melatonin secretion
    E.
    synthesized by pineal gland in central nervous system
    A.high doses can stimulate reproductive gonadal systems in males and females
  5. How many ovarian follicles are present at birth in females?
    a.100,000
    b.200,000
    c.300,000
    d.1-2 million
    e. 10-20 million
    d.1-2 million
  6. what is the main reason for the loss of follicles from birth to menopause?
    a.ovulation
    b.menstruation
    c.follicular atresis
    d.increase in FSH
    e.increase in LH
    c.follicular atresis
  7. FSH supports the rapid growth of tertiary follicles through which mechanism?
    a.
    stimulates progesterone in granulosa cells via the delta 5 pathway
    b.stimulates progesterone production in granullosa cells with the delta 4 pathway
    c.
    stimulates estrogen production in granulosa cells via the delta 5 pathway
    d.
    stimulates estrogen production in the theca cells via the delta 5 pathway
    e.stimulates estrogen production in luteal cells cia the delta 4 pathway
    c.stimulates estrogen production in granulosa cells via the delta 5 pathway
  8. LH supports the rapid development of grafian follicles through which mechanism?
    a. stimulates profesterone production in granulosa cells via the delta 5 pathway
    b.stimulates progesterone production in granulosa cells via the delta 5 pathway
    c.stimulates estrogen production in granulosa cells via the delta 4 pathway
    d.stimulates progesterone production in the theca cells via the delta 5 pathway
    e.stimulates progesterone production in luteal cells cia the delta 4 pathway
    e.stimulates progesterone production in luteal cells cia the delta 4 pathway
  9. What may indicate that a woman is ovulating?
    a.
    premenstrual syndrome
    b.Mittelschmerrz
    c.
    high levels of progesterone
    d.thick non stretchy cervical mucus
    e.all of the above
    b.Mittelschmerrz
  10. The entire process of spermatogenesis to spermiation takes how long?
    a.
    6-7 days
    b. 10-12 days
    c.
    65-75 days
    d.100-120 days
    e.300-350 days
    c.65-75 days
  11. Human adult males are constantly producing sperm at a rate of
    a.
    1/sec
    b.10/sec
    c.100/sec
    d.1000/sec
    e.10,000/sec

    d.1000/sec
  12. Which type of cell in the testes secrete inhibin?
    a.
    lutica vaginalis
    b.leydig cells
    c.male germ cells
    d.sertoli cells
    e.luteal cells
    d.sertoli cells
  13. Which type of cell produces 95% of the testostorone in males?
    a.
    tunica vaginalis
    b.leydig cells
    c.male germ cells
    d.sertoli cells
    e.luteal cells
    • b.leydig cells
  14. Which type of cells form tight junctions that provide the blood-testes border?
    a.
    tunica vaginalis
    b.leydig cells
    c.male germ cells
    d.sertoli cells
    e.luteal cells
    d.sertoli cells
  15. Which of the following increases the risk for developing prostrate cancer?
    a.
    diet rich in saturated fats from meat and dairy products
    b.diet rich in tomato paste
    c.diest rich in fruits and vegetables
    d.frequent ejaculations through sex
    e.frequent ejaculation through masturbation
    a.diet rich in saturated fats from meat and dairy products
  16. Which of the following is NOT true about estrogen?
    a.
    increases fluid retention in breasts
    b.levels are higher than progesterone in luteal phase
    c.causes positive feedback on GnRH in late-follicular phase
    d.produced through delta gour and delta 5 pathway
    e.
    b.levels are higher than progesterone in luteal phase
  17. what is the correct order of events in the typical female menstrual cycle?
    a.
    LH surge, positive feedback of estradiol, ovulation
    b.positive feedback of estradiol, ovulation, LH surge
    c.ovulation,LH surge, positive feedback of estradiol
    d.positive feedback of estradiol, LH surge, ovulation
    e. LH surge, ovulation, positive feedback of estradiol
    d.positive feedback of estradiol, LH surge, ovulation

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