1. Introduction to Anatomy & Physiology

Which of the following is an example of a positive feedback loop?

Ori overhears his study partners discussing a feedback loop where Substance M is released, and the more Substance M is released the more is generated. They note that humans don't release Substance M all the time, only when the pathway is activated. What type of feedback loop is this and why?

Labor and delivery is one of the more dangerous normal physiological functions that humans perform. How does this danger relate to the concept of feedback loops?