If a decrease in the level of potassium in the blood triggers the release of a hormone that raises blood potassium levels, this is an example of:
A) positive feedback.
B) indirect control.
C) empathetic response.
D) negative feedback.
E) an organ system.

Question

Quizplus · Accepted Answer

This is an example of negative feedback, a regulatory mechanism in which a stimulus causes an opposite output in order to maintain an ideal level of whatever is being regulated. In this case, the decrease in potassium levels triggers a response to increase potassium levels, aiming to bring them back to normal.

If a Decrease in the Level of Potassium in the Blood