BIOL141-c.20-Test4.txt

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Author:
dmk5154
ID:
151906
Filename:
BIOL141-c.20-Test4.txt
Updated:
2012-05-03 11:11:29
Tags:
psu biol141
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Description:
BIOL 141-c.20 sexual reproduction
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  1. Meiosis produces ___.
    sperm
  2. Gametes are haploid, and have ____ chromosomes. Other body cells are diploid, and have ____ chromosomes
    23;46
  3. The surge of testosterone that occurs at puberty causes ____.
    the larynx to enlarge
  4. Which female structure, like the penis, becomes swollen with blood during sexual arousal?
    clitoris
  5. Sperm are produced in the ____, and mature in the ____.
    seminiferous tubules; epididymis
  6. During spermatogenesis, the secondary spermatocyte develops into ____________.
    spermatids (mature)
  7. True or false? If testes fail to descend into the scrotum during fetal development, and remain in the abdominal cavity, the temperature of the testes will be too high to allow normal sperm development
    true
  8. When do the primary oocytes develop within the primary follicles?
    before birth
  9. When does ovulation usually occur?
    about about the middle of the uterine cycle (14 days)
  10. Cilia lining the oviducts pushes the oocyte toward the ____.
    uterus
  11. In the female, FSH causes ___, while LH causes ____.
    follicle maturation; ovulation
  12. How does the pill containing both estrogen and progesterone prevent pregnancy?
    Suppressing FSH and LH, and preventing ovulation
  13. The hormone secreted by the embryo, and detected by pregnancy tests, is ____.
    human chorionic gonadotropin (HCG)
  14. Which of the following is true of HCG? -It is secreted by the ovaries when pregnancy occurs. -Its target cells are located in the uterine wall.-Its target cells are located in the ovary.-It induces mitosis in the embryo
    Its target cells are located in the ovary
  15. In a normal pregnancy, the embryo implants into the ____.
    endometrium
  16. Endometriosis is ____.
    abnormal attachment of the endometrium to other organs

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