Birth control pills containing synthetic estrogen and progesterone inhibit the ovarian cycle.A similar situation occurs during pregnancy, when levels of estrogen and progesterone are high.During pregnancy, progesterone is produced first by the _______ and then by the _______.

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During the early stages of pregnancy, the corpus luteum, which forms from the remnants of the follicle that released the egg, produces progesterone. This is crucial for maintaining the early stages of pregnancy. As the pregnancy progresses, the placenta takes over the production of progesterone, supporting the pregnancy until birth.

Birth Control Pills Containing Synthetic Estrogen and Progesterone Inhibit the Ovarian