Unformatted text preview: ble challenges… challenge challenge challenge challenge Physiological variable Physiological variable Sudden challenges take us outside the predictive, or “healthy” range.
Homeostatic processes are required to bring variable back in range. challenge Time (1 day) Time (1 year) seen in a previous lecture on a 4 month time scale Challenges to the system… Physiological variable contributes to Homeostatic load
on the CCN! Coordinating
centre challenge contributes Setpoint Behavior Metabolism to challenge Vascular smooth muscle Time (1 day)
Hair smooth muscle
Temperature sensors Temperature sensors homeostatic load = total activity of the CCN to bring all homeostatic parameters back to the set
point/within the 'predictive range' sometimes called 'allostatic load' 6 3/16/2012 Reactive range and scope … reactive
range Time (1 day) *Predictive Physiological variable Physiological variable Reactive range: the range of homeostatic disturbance your body can recover from reactive
range Time (1 year) range + reactive range = reactive scope Reactive scope: the total healthy scope an individual can react to.
Outside this scope? May or may no...
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- Winter '11
- Homeostasis, physiological variable