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The manner in which organ systems function remains more or less the same at all stages of life. Thus Starling's law of the heart and the Fick principle apply to young and old alike. But the internal and external demands on the body vary at different life stages, and accordingly the adaptive mechanisms necessary to achieve physiological equilibrium are distinctive from one age to another. Dr. Timiras and seven other contributors have produced a valuable compendium of these adaptive mechanisms. Their thesis, stated in the preface, is that growth, development, and aging depend on both genetic and environmental factors and
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Developmental Physiology and Aging.. Ann Intern Med. 1973;78:799. doi: 10.7326/0003-4819-78-5-799_2
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Published: Ann Intern Med. 1973;78(5):799.
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Print ISSN: 0003-4819 | Online ISSN: 1539-3704
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