The onset of uterine contractions may be due to increased concentrations of certain prostaglandins along with an increase in the number of receptors for oxytocin. The amnion and chorion produce phospholipids that are metabolized into arachidonic acid. This is synthesized into prostaglandin I (PGI) and F (PGF), which increase during human childbirth.
Taken as a whole, the biochemical . . . → Read More: Physiology of baby delivery
