What is foetal ejection reflex? Explain how it leads to parturition?

Parturition is the delivery of foetus into the outside world. Foetal ejection reflex are the signals given by the completely developed foetus and the placenta which causes mild uterine contractions.

1. When the foetal ejection reflex occurs, mild uterine contractions takes place.

2. These mild uterine contractions trigger the release of oxytocin.

3. The release of oxytocin in turn, leads to stronger uterine contractions. This process continues until a stronger contraction leads to the expulsion of baby through the birth canal or parturition.