The beginning of labor involves increased production of ________ from the fetal hypothalamus, resulting in secretion of ________ by the placenta.

A. prostaglandin; prolactin
B. prolactin; GnRH
C. oxytocin; prostaglandins
D. prolactin; oxytocin
E. GnRH; prolactin


Answer: C

Anatomy & Physiology

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