It is a winter day in Florida, and the temperature is 40°F in the morning. While you are walking to class, your body uses a nega
tive feedback loop in order to shiver and maintain your internal body temperature at 98.6°F. After class, the temperature outside has increased to 80°F and you begin to sweat since you are still wearing your winter clothes. Is the process of sweating in order to cool down and maintain an internal body temperature of 98.6°F an example of a positive or negative feedback loop?
The negative feedback system is the most common in the body, being considered by many authors the primary mechanism for the maintenance of homeostasis. It causes a negative change from the initial change, that is, a stimulus contrary to the one that led to the imbalance. In the case of the above question, when the ambient temperature increased, your body began to sweat to lower the temperature, that is, your body is trying to make a stimulus contrary to what is happening in the environment, so we can state that your body is going through a negative feedback system.
