Negative feedback loop


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  • Juliet Loboda The Zombie Chick wakes up to find herself in a beautiful lush forest.
  • Okay, this is pretty cool!
  • After spending only a few hours in the forest Juliet is unwillingly transported to a remote part of the Arctic circle.
  • Well darn, this is actually kind of annoying. Now I am absolutely freezing! 
  • The drastic temperature change between the Arctic and Kebili Tunisia is causing Juliet's body to react quickly to maintain internal equilibrium.
  • Come on! 
  • Juliet has now discovered her magical zombie ability of transportation! But there's a catch: she doesn't have any control over it! :o 
  • The cave is very cool, and Juliet starts to shiver uncontrollably to keep warm.
  • In order for Juliet's un-dead body to maintain internal balance or Homeostasis she must rely on a negative feedback loop known as body temperature regulation. 
  • Oh, and did I mention she can walk on water too?
  • I could get used to this, though.
  • As Juliet goes from cold to hot conditions her skin acts as a receptor as it recognizes the change in temperature. 
  • Positives of Negative Feedback Loops
  • Wow, this is incredibly peaceful! This transportation business isn't all bad!
  • The information obtained from Juliet's zombie skin cells affects the brain-the control center- (via the afferent pathway) which then sends commands to the Effector (by way of the efferent pathway).
  • Oh my! It's so wet and cool down here. Brrrr! 
  • The Effector (the sweat glands in the heat and muscles in the cold) then works to either raise body temperature through shivering or lower it through sweating. 
  • Heat is either evaporated or radiated depending on internal body temperature. And through vacillating between lowering and raising the temperature, Juliet is able to constantly adapt to her ever changing environment!
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