NASA Technical Reports Server (NTRS) : Physiology pdf

NASA Technical Reports Server (NTRS) : Physiology

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This manuscript emphasizes the physiology of fluid-electrolyte-hormonal responses during the prolonged inactivity of bed rest and water immersion. An understanding of the total mechanism of adaptation (deconditioning) should provide more insight into the conditioning process. Findings that need to be confirmed during bed rest and immersion are: (1) the volume and tissues of origin of fluid shifted to the thorax and head; (2) interstitial fluid pressure changes in muscle and subcutaneous tissue, particularly during immersion; and (3) the composition of the incoming presumably interstitial fluid that contributes to the early hypervolemia. Better resolution of the time course and source of the diuretic fluid is needed. Important data will be forthcoming when hypotheses are tested involving the probable action of the emerging diuretic and natriuretic hormones, between themselves and among vasopressin and aldosterone, on diuresis and blood pressure control

• Creator/s: NASA Technical Reports Server (NTRS
• Date: 1/1/1984
• Year: 1984
• Book Topics/Themes: NASA Technical Reports Server (NTRS), BED REST, BODY FLUIDS, ELECTROLYTES, WATER IMMERSION, DIURESIS, PHYSIOLOGICAL RESPONSES, BLOOD PLASMA, ALDOSTERONE, ANTIDIURETICS, BLOOD PRESSURE, DECONDITIONING, DIURETICS, FLUID PRESSURE, HORMONE METABOLISMS, HYPERVOLEMIA, TISSUES (BIOLOGY), THORAX, INTERSTITIALS, MUSCLES, HEAD (ANATOMY), Greenleaf, John E

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