Question

There are two types of homeostatic control systems in the body. These include positive and negative feedback systems. Most feedback systems are negative, meaning that the original stimulus is reversed. During a positive feedback loop, the original stimulus is intensified. What is a good example of a positive feedback loop?
A) childbirth
B) maintaining blood pressure
C) blood glucose concentrations in body
D) body shivering in response to being cold

Answer 1

A) Childbirth, because in labor, a hormone is released that intensifies and speeds up contractions.