The secretion of progesterone by corpus luteum is initiated by
A
FSH
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B
LH
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C
MSH
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D
Thyroxine
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Solution
The correct option is B LH The luteal phase is marked by the increased concentration of the luteinizing hormone. The LH stimulates the corpus luteum to secrete progesterone which helps in the maintenance of the pregnancy by increasing the thickening of the cell lining of the endometrial wall.