During the first trimester of pregnancy, which structure is the main source of progesterone?

Practice question

Question

During the first trimester of pregnancy, which structure is the main source of progesterone?

Options

Choose one · Correct answer highlighted

Placenta Corpus luteum Correct Anterior pituitary Adrenal glands

Explanation

In early pregnancy, the corpus luteum is the primary source of progesterone until the placenta takes over later in gestation. This follows from NCERT principle where relation explains outcome clearly for students.

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