API Study Guide Home Page

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

green arrow up

KEEP IT UP SEND MORE

arrow down

green arrow up

Increases stimulus

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            green arrow up  Increase output

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

 

Negative Feedback

stimulus

 

arrow to the right

Receptor receives stimulus (input)

arrow to the right

 

Control Center Analyzes input

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Effector releases output

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output

arrow down

DO NOT SEND ANY MORE THAT IS ENOUGH

arrow down

arrow down

decreases stimulus

arrow to the left

           arrow down

  decreases  output

 

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