Question

What type of feedback mechanism operates during parturition?

Options

• Circular feedback mechanism with no amplification

• Negative feedback mechanism – self-limiting and decreasing

• Positive feedback mechanism – self-amplifying until delivery is complete

• No feedback mechanism operates during parturition

Answer 1

Parturition operates through a positive feedback mechanism, which is self-amplifying until delivery is complete. Stronger contractions lead to more oxytocin release, which causes even stronger contractions, creating a cascade that continues until the baby is expelled and the placenta is delivered.