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Anatomy General obstetrics 97b96854

Which of the following trigger onset of labour?

A
ACTH in mother
B
ACTH in fetus
C
Prostaglandin
D
Oxytocin
High-Yield Explanation
Fetal ACTH acts on fetal adrenal gland causing release of DHEA and DHEA sulphate which are used by the placenta along with the other enzymes like Sulfatase ,Aromatase, 3 B hydroxysteroid dehydrogenase, 17 B hydroxysteroid dehydrogenase -Conveing into Estriol and Estardiol that help in triggering the labour. Ref: Williams Obs 24e pg 108-109.

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