All cells of the body are bathed by a fluid called the interstitial fluid, which provides the internal environment of the cells. Both volume and composition of the interstitial fluid must remain within narrow limits, or malfunctions result. Abnormal volumes of vascular and interstitial fluids impair cardiovascular function, and abnormal composition of interstitial fluid impairs cell function. The relevant concentrations include those of electrolytes (e.g., sodium, potassium, bicarbonate, chloride, phosphate, sulfate, and hydrogen ions), metabolic waste products, and even water (osmotic effects).
KeywordsInterstitial Fluid Extracellular Volume Fluid Compartment Sulfate Sulfur Interstitial Compartment
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