Positive And Negative Feedback

A short description of positive and negative feed back cycles and homeostasis.

1. Positive and Negative Feedback

2. Positive and Negative Feedback
• Don’t think “good and bad”
• Both of these bring the body back to
homeostasis
• Positive Feedback involves an
exaggeration of the body’s efforts to
get back to normal (very few examples)
• Negative Feedback – getting the
body back to normal (many examples)

3. Perspiration. (2009, October 7). In Wikipedia, The Free Encyclopedia.
Retrieved 00:23, October 23, 2009, from
http://en.wikipedia.org/w/index.php?title=Perspiration&oldid=318391890
Amanda_Françozo_At_The_Runner_Sports_Fragment.jpg
Sweat Shiver
Negative Feedback

4. Positive Feedback
Labor and Delivery
An exaggeration that gets the body
back to normal