Scientific research indicates that the baby actually triggers the biochemical signals that initiate labor, working in tandem with the mother's hormonal system. As the fetus matures, its adrenal glands and brain release specific stress hormones (such as cortisol) that signal the placenta to decrease progesterone and increase estrogen production. This hormonal shift stimulates the uterus to produce prostaglandins and oxytocin, causing the muscles to contract and signaling the mother's body that it is time for birth to begin.
1 votes
Marked as accepted