Question 118 · LEK · Endocrine system
Absence of menstruation after fertilization and implantation of the embryo in the endometrium is caused by:
- A. absence of corpus luteum degeneration and the increased synthesis of progesterone and estrogens because of increasing levels of chorionic gonadotropin.
- B. absence of corpus luteum degeneration and the increased synthesis of progesterone and estrogens because of decreasing levels of prolactin.
- C. absence of corpus luteum degeneration because of the placenta taking over the production of progesterone and estrogens.
- D. degeneration of the corpus luteum because of the placenta taking over the production of progesterone and estrogens.
- E. degeneration of the corpus luteum because of increasing prolactin levels.
Hint
Think about which hormone produced by the implanted trophoblast rescues the corpus luteum from regression.
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