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Ferguson Reflex

Surge of oxytocin, resulting in increased contractions, as the presenting part of the fetus stimulates nerve receptors in the pelvic floor, the cervix and upper portion of the vagina. As a consequence the woman experiences the urge to push. This reflex becomes increasingly compulsive, overwhelming and involuntary. The woman's response is to employ secondary powers of expulsion by contracting her abdominal muscles and diaphragm.

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