What the feedback loop does in your body
A positive feedback loop maintains the direction of the stimulus and possibly accelerates it. … Another example of positive feedback is uterine contractions during childbirth. The hormone oxytocin, made by the endocrine system, stimulates the contraction of the uterus.
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Examples of processes that utilise negative feedback loops include homeostatic systems, such as: Thermoregulation (if body temperature changes, mechanisms are induced to restore normal levels) Blood sugar regulation (insulin lowers blood glucose when levels are high ; glucagon raises blood glucose when levels are low)
4 parts of homeostasis
stimulus-The first contractions of labor (the stimulus) push the baby toward the cervix (the lowest part of the uterus).
Receptor- As the baby moves toward the vagina (birth canal), pressure receptors within the cervix (muscular outlet of uterus) send messages to the brain to produce oxytocin.
Control center-control center (integrator or comparator), effectors, and methods of communication.
effector-Oxytocin causes stronger contractions of the smooth muscles in of the uterus (the effectors), pushing the baby further down the birth canal.
The bones and muscles of the pelvis provide support for the growing uterus and baby, and provide a passage through which your baby emerges during birth.
The uterus surrounds the baby, growing as the baby grows.
The cervix is actually a part of the uterus, but made up of different tissue. During pregnancy, the cervix is thick and closed. As you approach the time of birth, your contractions draw the cervix up into the body of the uterus, and it becomes thinner (called effacement) and opens (called dilation). When the cervix is fully dilated (about ten centimeters), contractions help the baby begin to move from the uterus into the vagina.
The vagina leads from the cervix to the outside of your body. The inside of your vagina has many folds, called rugae, which unfold as the baby passes through.
Feedback loop does not work?
If homeostasis is disrupted, it must be controlled or a disease/disorder may result. Your body systems work together to maintain balance. If that balance is shifted or disrupted and homeostasis is not maintained, the results may not allow normal functioning of the organism.
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