Gen Biology Study Guides

Control Systems

stimulus

 

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Receptor receives stimulus (input)

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Control Center Analyzes input

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Effector releases output

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output

 

Positive Feedback:

stimulus

 

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Receptor receives stimulus (input)

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Control Center Analyzes input

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Effector releases output

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output

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Increases stimulus

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            arrow  Increase output

Output feeds back & becomes the stimulus that results in increased output.

 

Negative Feedback

stimulus

 

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Receptor receives stimulus (input)

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Control Center Analyzes input

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Effector releases output

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output
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decreases stimulus

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  decreases  output

 

Output feeds back & becomes the stimulus that results in decreased output.