Friday, September 14, 2012

Homeostasis

    What is homeostasis? Homeostasis is the ability to maintain a relatively stable internal environment in an ever-changing outside world. In other words, it'ns how your body balances with the thing around you.


       In the video we watch, it deals with homeostasis. It had shown these runner, as they ran 42 kilometer. They  were tracking this lady in the race, they tracked her glucose, temperature, heart rate, and weight. Then it showed how homeostasis help her in the race. Homeostasis help by taking the blood to where it was needed (evening out), letting her sweat so she could stay cooled off as she ran, and kept her going.



Like in most things there is a negative and a positive feedback. The negative feedback happens to go the opposite way. This systems output shut off the original stimulus. The positive feedback counties going the same way. In this feedback the output enhances or exaggerates the original stimulus. When homeostatic is imbalance it effects the body's normal equilibrium. When there is more negative feedback mechanisms allows destructives of the positive feedback mechanisms to take over.