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BuhReddy BuhReddy
wrote...
11 years ago
positive feedback loop between cervical stretch receptors,neurosecretory cells ,oxytocin,uterine smooth muscle?
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wrote...
11 years ago
Cute Babe..
While negative feedback loops resist internal change, positive feedback loops bring about rapid change. In a positive feedback loop an initial change in one direction becomes pushed further and further in a same direction .The example of positive feedback is birth of a baby during labour and delivery. The hormone oxytocin causes uterine contractions and these stronger muscular actions cause more oxytocin to be released and  more contractions can, therefore, occur. The feedback produces stronger and longer contractions spaced closer and closer together until, at the climax of the cycle, a baby is born and expelled by uterus. This explosive action stops the loop and homeostasis-in this case, a non-contracting uterus is restored.
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