Estriol is produced in the placenta from a fetal precursor called 16α-Hydroxy-DHEA-S formed in the _____.

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Study for the Ciulla Clinical Chemistry Test. Enhance your knowledge with flashcards and multiple-choice questions. Prepare for the exam with comprehensive study materials and detailed explanations for each question.

Multiple Choice

Estriol is produced in the placenta from a fetal precursor called 16α-Hydroxy-DHEA-S formed in the _____.

Explanation:
Estriol production during pregnancy relies on fetal steroid precursors. The placenta cannot make estrogens from cholesterol on its own and uses a fetal product, 16α-hydroxy-DHEA-S, formed in the fetus (primarily by fetal adrenal/letal contributions). The placenta then converts this fetal compound into estriol, which enters maternal circulation. This fetal origin of the precursor explains why the fetus is the correct source.

Estriol production during pregnancy relies on fetal steroid precursors. The placenta cannot make estrogens from cholesterol on its own and uses a fetal product, 16α-hydroxy-DHEA-S, formed in the fetus (primarily by fetal adrenal/letal contributions). The placenta then converts this fetal compound into estriol, which enters maternal circulation. This fetal origin of the precursor explains why the fetus is the correct source.

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