Biomed 100 Practice Quiz
Chapter 19, Fall 2007
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  1. Meiosis, which produces cells with 23 chromosomes each, occurs in
    1. stem cells in many locations around the body
    2. the male reproductive system
    3. the female reproductive system
    4. both the male and the female reproductive systems
      5.
    5. developing embryos only

  2. After being produced in a testis, sperm are transported to _?_ where they are stored prior to entering a vas (ductus) deferens.
    1. an epididymis
      2.
    2. a seminal vesicle
    3. the prostate gland
    4. none of the above (sperm are not stored prior to entering a vas deferens)

  3. The seminal vesicles produce all of the following except
    1. testosterone
    2. nutrients for sperm
    3. over 50% of the semen volume
    4. an alkaline (basic) substance that protects sperm from acid

  4. Descent of the testes
    1. is required to keep the testes warm enough to function normally
    2. normally occurs prior to birth
      3.
    3. normally occurs during puberty
    4. normally occurs during sexual activity throughout a man's life
    5. is an abnormal occurrence requiring surgical intervention

  5. Testosterone is produced by the _?_ following stimulation by a hormone released from the _?_.
    1. adrenal glands / testes
    2. testes / pituitary gland
      3.
    3. testes / adrenal glands
    4. pituitary gland / testes

  6. The uterine tubes are directly attached to
    1. the ovaries
    2. the uterus
      3.
    3. the vagina
    4. none of the above

  7. During weeks 1 and 2 of the ovarian cycle, follicle development is stimulated primarily by
    1. hCG, which is produced by the pituitary gland following stimulation by a hormone from the embryo
    2. FSH, which is produced by the pituitary gland following stimulation by a hormone from the hypothalamus
    3. LH, which is produced by the corpus luteum following stimulation by a hormone from the hypothalamus
    4. progesterone, which is produced by the hypothalamus following stimulation by a hormone from the pituitary gland

  8. Ovulation is "triggered" by rapid secretion of a large amount of _?_ from the _?_.
    1. FSH / pituitary gland
    2. LH / pituitary gland
      3.
    3. estrogens / ovarian follicle
    4. progesterone / ovarian follicle
    5. human chorionic gonadotropin (hCG) / embryo

  9. When and where does a corpus luteum normally appear?
    1. In the medulla of an ovary, prior to birth.
    2. In the cortex of an ovary, following to ovulation.
      3.
    3. In the outer portion of a uterine tube, immediately following fertilization.
    4. In the endometrium of the uterus, following implantation of an embryo.

  10. What is the approximate age of an embryo when implantation occurs?
    1. 12 to 24 hours
    2. 6 to 7 days
      3.
    3. 14 days
    4. 28 days

  11. What is/are major effects of the high levels of ovarian hormones (progesterone and estrogens) during week 3 of the ovarian cycle?
    1. Stimulate pituitary gland and stimulate thickening of the endometrium (uterine lining).
    2. Inhibit pituitary gland and stimulate thickening of the endometrium (uterine lining).
      3.
    3. Stimulate pituitary gland and cause shedding of the endometrium (menstruation).
    4. Inhibit pituitary gland and cause shedding of the endometrium (menstruation).