BIOL 404-Exam 4-Reproduction 20

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  1. What is the chorion?
    The external membrane of the placenta
  2. During the first trimester, the chorion is the source of what hormone?
    Gonadotropin hormone
  3. What is the source of ginadotropin during the first trimester?
    The chorion
  4. Why does the chorion secrete gonadotropin?
    To maintain the corpus luteum's steroid production
  5. What produces steroids that support gestation during the 2nd and 3rd trimester?
    The placenta
  6. What is placental steroidogenisis?
    Steroid production by the placenta in the 2nd and 3rd trimester
  7. What is an early indicator of pregnancy?
    Metabolites in the urine
  8. When does the switch from uterine dependence on the ovaries for steroid support to dependence on the placenta occur?
    The end of the first trimester
  9. What is the interval of the greatest likelihood of miscarriage?
    The first trimester
  10. What hormones are the main hormones produced by the placenta (5)?
    • estrogen
    • Progesterone
    • Human chorionic gonadotropin
    • inhibin
    • human placental lactogen
  11. Describe the hormonal role of the anterior pituitary during pregnancy?
    • Secretes very little FSH and LH
    • Increased secretion of prolactin
  12. What organ produces prolactin?
    The anterior pituitary
  13. Salt and water are retained or flushed during production?
    Retained at a higher rate
  14. What causes water and salt to be retained at a higher rate during pregnancy?
    Increased aldosterone, vasopressin and estrogen levels
  15. What do increased estrogen, vasopressin and aldosterone cause during pregnancy?
    Increased water and salt retention
  16. What do the kidneys secrete during pregnancy?
    • renin
    • erythropoietin
    • 1,25-duhydroxyvitamin D
  17. What organ secretes renin, erythropoietin and 1-25-dihydroxyvitamin D during pregnancy?
    The kidneys
  18. What does the adrenal cortex secrete during pregnancy?
  19. What does the Posterior pituitary secrete during pregnancy?
  20. What does the Parathyroid secrete during pregnancy?
    Parathyroid hormone
  21. What hormones cause the glandular tissue to develop during pregnancy?
    • Estrogen
    • Progesterone
    • Prolactin
    • Human placental prolactin
Card Set
BIOL 404-Exam 4-Reproduction 20
BIOL 404-Exam 4-Reproduction 20
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