Daily Archives: April 21, 2014

Homeostasis – maintaining a stable internal environment

brain copy 2

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.