When describing the concept of allostatic load to a group of students, which of the following would the instructor identify as abnormal, indicative of the overall changes of the biologic regulatory system?
A) Nuclear imaging studies
B) Laboratory test results
C) Bone radiographs
D) Cardiac studies
Ans: B
As wear and tear on the brain and body occurs, there is a corresponding increase in the number of abnormal biologic parameters called allostatic load (AL) (Fig. 12.2). AL is measured by the cumulative changes of the biologic regulatory systems as indicated by abnormal laboratory values. Nuclear imaging studies, bone radiographs, and cardiac studies are not used to measure AL.
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