During the second trimester of pregnancy, which hormone shows a decrease in level?

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Enhance your knowledge with the Ciulla Clinical Chemistry Test. Study with interactive quizzes, featuring flashcards and multiple-choice questions. Each question offers hints and explanations for better understanding. Prepare effectively and excel in your exam!

Multiple Choice

During the second trimester of pregnancy, which hormone shows a decrease in level?

Explanation:
During the second trimester, the hormone that decreases is hCG. In early pregnancy, hCG supports the corpus luteum so it can keep producing progesterone. As the placenta matures and takes over progesterone production, the reliance on hCG diminishes, so its levels fall. In contrast, progesterone and estriol continue to rise as placental and fetal-placental unit development progresses, making them increase rather than decrease in the second trimester. So the hormone that shows a decrease in level during the second trimester is hCG.

During the second trimester, the hormone that decreases is hCG. In early pregnancy, hCG supports the corpus luteum so it can keep producing progesterone. As the placenta matures and takes over progesterone production, the reliance on hCG diminishes, so its levels fall. In contrast, progesterone and estriol continue to rise as placental and fetal-placental unit development progresses, making them increase rather than decrease in the second trimester. So the hormone that shows a decrease in level during the second trimester is hCG.

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