VARIATION TYPES physiological and anatomicalWatch
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A physiological variation, on the other hand, is a variation that affects the function or the physiology of an organ. For instance, in athletes, the heart rate gets low, and may fall to 40 bpm. In normal people this would be considered low heart rate, and a cause for concern, but in athletes, this is normal (technically speaking, this is a physiological adaptation, not a variation. I can't think of a variation right now.
I hope that helps
Physiological is the chemical make up of an organism and anatomical is what you would see it you dissected it!