The scientific article you have studied is adapted from an article in Clinical Nutrition entitled Muscle tissue changes with aging (July 2004). Use the information from the scientific article and your own knowledge to answer the following questions. Insulin control of blood glucose is an example of a negative feedback loop (paragraph 7). Explain how negative feedback can maintain a system within a narrow limit. (2) ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................

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