Mechanoreceptors in the nipple (activated by the suckling newborn) and the cervix (cf Positive feedback mechanisms during childbirth differ from negative feedback systems commonly found in the body Ferguson reflex) create a positive sensory feedback loop, which leads to the additional release of oxytocin in the brain.
Destiny (@fairydustdess) • Instagram photos and videos
During childbirth, a classic example of a positive feedback loop occurs
As the baby's head presses against the cervix, nerve impulses stimulate the brain to release oxytocin from the pituitary gland
This hormone increases the strength and frequency of uterine contractions, further pushing the baby through the birth canal. The positive feedback loop that comes into play during childbirth is the stimulation that happens when the baby’s head presses on the cervix—the bottom of the uterus, through which the baby must emerge—and activates neurons to the brain. Childbirth and the body’s response to blood loss are two examples of positive feedback loops that are normal but are activated only when needed Childbirth at full term is an example of a situation in which the maintenance of the existing body state is not desired.
Positive feedback is an essential part of childbirth, involving four key entities Oxytocin, uterine contractions, the cervix, and the baby Oxytocin, a hormone produced by the pituitary gland, stimulates uterine contractions, which in turn apply pressure to the cervix. Explain the positive feedback loop in childbirth
During labor, the release of oxytocin increases uterine contractions
These contractions then stimulate the release of more oxytocin, further increasing the contractions. True labor progresses in a positive feedback loop in which uterine contractions stretch the cervix, causing it to dilate and efface, or become thinner Cervical stretching induces reflexive uterine contractions that dilate and efface the cervix further.
