Thursday, November 29, 2012

Homework for Saturday Dec 1



You're homework for saturday is to visit the wesbite Think Bank-Homeostasis and read until you get to 'Play the game'. Please take notes while you are doing so.

Feedback Loops

Our 2nd main topic of the term is Homeostasis. Homeostasis is accomplished mainly via feedback loops. 
Remember that maintaining homeostasis is not JUST responding to changes to your internal and external environments. Sometimes the body needs to 'swing out' of balance to help maintain or 'get back' to homeostasis (ex. running a fever to fight infection, heart rate increasing when running). Can you think of other examples?

Below are 2 videos that explain homeostasis and give examples of the two types of loops:

Negative
Positive

Can you describe the difference between the 2 types and give examples?


Feedback Loops