Estrogen and Progesterone Maintain the Integrity of the Uterine Lining

question 22

Multiple Choice

Estrogen and progesterone maintain the integrity of the uterine lining and prepare the mammary glands to secrete milk. Which of the following structures makes this possible during the first three months of pregnancy?

• A) corpus luteum
• B) the chorion
• C) corona radiata
• D) the amnion

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