A) Estrogen
B) Progesterone
C) Luteinizing hormone
D) Chorionic gonadotropin
Correct Answer: D
Solution :
If fertilisation occurs and the foetus is implanted in the endometrium, the tropho blast cells of developing placenta secrete a hormone called human Chorionic Gonadotropin (hCG) hormone. This hormone like LH maintain the secretion of progesterone and estradiol. These two hormone check the breakdown of endometrium of the utreus.
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