Endocrine+systems

In Unit 3: Area of Study 2 – Detecting and Responding – a key concept is**homeostasis**, the process of maintaining a stable internal environment, either within a cell or inside an organism, despite changes in the external environment of that cell or organism. The changes can be temperature, pH, concentrations of various ions, hydration, blood pressure or glucose levels in the blood. Access the first two resources to find out more about homeostasis.
 *  Homeostasis and the Nervous System – a pdf file
 *  “Homeostasis” Biosnippets – a multimedia resource from University of NSW
 *  Homeostasis and temperature regulation in humans – video and quiz from the Education Portal
 *  Homeostasis – Teacher’sTV on YouTube
 *  Homeostasis – Blood glucose levels – YouTube video
 *  Homeostasis – Body temperature - YouTube video
 *  Positive and Negative Feedback Loops – Bozeman Science on YouTube