During childbirth,as a baby's head is pressed against the mother's cervix,signals are relayed via nerves from cervix to the mother's brain.The brain initiates the secretion of oxytocin (a hormone)from the mother's pituitary gland.Oxytocin stimulates further uterine contractions.As the uterus contracts even harder in response to oxytocin,the baby's head is pushed harder against the cervix;this stimulates yet more nerve signals to the mother's brain,resulting in yet more oxytocin secretion until finally the baby is pushed through the cervix.This process of childbirth is an example of

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Positive feedback is a process in which a change leads to an amplification of that change. In childbirth, the pressure of the baby's head on the cervix leads to the release of oxytocin, which causes stronger contractions and more pressure on the cervix, leading to more oxytocin release. This positive feedback loop continues until the baby is born.

During Childbirth,as a Baby's Head Is Pressed Against the Mother's