Positive feedback loop

Positive feedback loop
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  • One  spring morning at the stream...
  • I'm so glad we decided to spend the weekend at this park!
  • Same here! It's so refreshing to get away from our jobs for a little while
  • Oh my goodness! I just tripped on a rock and now my knee is bleeding. 
  • Oh no, Angela. Don't worry though. Homeostasis will help  it heal.
  • How does homeostasis help my knee heal?
  • When you scraped your knee, which was the stimulus, a receptor detected the change in  balance within your body.
  • This info from the receptor is then sent along an afferent pathway to your body's control center. The control center then sends  an output along an efferent pathway to  your effector.
  • The effector then causes a response, which in this case, signals are being sent to clot your blood in order to stop the bleeding.
  • This is called a positive feedback loop because once your body gets the signal that you're bleeding, it goes above and beyond in order to stop it.
  • Wow! I get it now!
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