Positive feedback increases deviation from a set point, rather than returning the system to a set point like negative feedback. It is associated with responses that tend to escalate or amplify, rather than terminate slowly. Positive feedback is less common than negative feedback in physiological systems, but it plays important roles in certain physiological processes, such as childbirth and blood clotting.

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Positive Feedback

Question 151

Multiple Choice

Positive feedback

A) is more common than negative feedback in physiological systems.
B) returns a system to a set point.
C) is associated with responses that tend to terminate slowly.
D) increases deviation from a set point.
E) decreases the physiological response.

Correct Answer: