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Homeostasis
chapter 1
| Question | Answer |
|---|---|
| What is homeostasis? | maintenance of a relatively stable internal environment |
| dynamic steady state | the changes that do occur are minimized by compensatory physiological changes |
| "dynamic" | each regulated factor marked by continuous change |
| "steady state" | changes don't deviate far from a constant or steady level |
| factors homeostatically regulated | temperature, concentration of nutrients, pH, concentration of O2 and CO2, volume and pressure, concentration of waste products, and concentration of water, salt and other electrolytes |
| internal environment | ECF; fluid that surrounds the cells and through which they make life sustaining changes |
| ECF | extracellular fluid; plasma and interstitial fluid |
| plasma | fluid portion of the blood |
| interstitial fluid | surrounds and bathes cells |
Created by:
graciegort05
on 2010-12-16