In a feedback system, the effector typically affects the variable that served as a stimulus. Based on that, which of these is NOT an example of a feedback system?
A) increasing the rate of respiration in response to a decrease in oxygen levels
B) decreasing the rate of glycogenesis in response to decreased glucose levels
C) increasing contraction strength in response to the baby's head pushing on the cervix
D) decreasing blood pressure in response to a large blood volume loss

Question

Quizplus · Accepted Answer

In a feedback system, the effector's action should counteract the stimulus. In option D, decreasing blood pressure in response to a large blood volume loss would exacerbate the problem rather than counteract it, making it not a typical feedback response.

In a Feedback System, the Effector Typically Affects the Variable