Check your understanding: What type of feedback, positive or negative, is illustrated below? How do you know? Explain your thinking.
Uterine stretch Brain sends Oxytocin causes More and stronger
receptors are > Signals to release > the Uterine > Contractions until
activated Oxytocin Muscles to contract Birth
1 answer
The feedback illustrated above is positive feedback. I can determine this because the series of events shown in the illustration results in an amplification or increase in the initial stimulus, which is the contractions of the uterine muscles. The activation of uterine stretch receptors signals the brain to release oxytocin, which then causes the uterine muscles to contract. These contractions lead to even more and stronger contractions until birth, indicating a positive feedback loop.