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The main function of mammalian corpus luteum is to produce:

1. estrogen only
2. progesterone
3. human chorionic gonadotropin
4. relaxin only

Correct answer: progesterone

Solution

The mammalian corpus luteum forms from the ruptured follicle after ovulation and its primary role is to secrete progesterone. Progesterone maintains the endometrium and supports early pregnancy.

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