What is the role of the receptor in a feedback system?

A. It contains the set point for the variable that is being controlled.

B. It measures changes in the variable that is being controlled.

C. It produces output that will have a direct effect on the variable that is being controlled.

The correct answer is option B.

Explanation:

A receptor present in the feedback system determines the modifications taking place in the variable, which is being monitored. To monitor the level of variable as determined by a receptor a feedback system is used. The association of receptors takes place with the control center that changes the signal attained by the receptor.  

Every variation in the working of the feedback system is determined and detected by the receptors that help in the initiation of the homeostatic response of the body.  

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