Thursday, September 15, 2011
Friday, September 9, 2011
Homeostasis is a property or quality of multicellular organism's systems that allow us to maintain a stable environment. To break that down and make it even a little more understandable, we can say homeostasis is a natural quality we have within us to keep a constant internal environment. In order for the body to maintain this internal environment, there are self-regulating control systems through which our body does this process. These control systems have 3 parts to them: Receptors, the control center, and effectors.
|(Taken from Hole's Anatomy)|
- Receptors: provide information about specific conditions in the internal environment. A receptor may be a molecule or a cell or even a system. The receptor detects the bodies need and then contacts the control center.
- Control Center: includes a set point (target value of a physiological measure maintained automatically in the body), which tells a particular value should be. An example would include human body temperature at 98.6 degrees Fahrenheit. This center gets the information from the receptor, reads where the body is at compared to where it needs to be, and sends the mission to the effectors.