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Negative Feedback by Eric Babcock

Page history last edited by Eric Babcock 12 years, 2 months ago

                                              Negative Feedback

                                                    By Eric Babcock

     Negative feedback maintains conditions within limits. If a change or slight deveation occurs from normal is detected, a sensor or control valve brings the organ back to normal. Negative feedback is like a thermostat bringing to one point then backing down to a set point to maintain normal.

     Negative feedback needs three things: Receptor, control center and effector. For example to help with pH blood vessels in the receptor monitor pH which then measure resistance of blood flow against the walls in turn monitor blood pressure.

 

references: 

science.jrank.org/pages/3365/Homeostasis.htm

McGraw Hill Images from google images

 

Control of pH

 


 


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