Knowra Body fluid Body fluid A liquid found within or produced by an organism, including blood, lymph, saliva, and urine. Body fluids transport substances, support physiological processes, and remove waste.
Extracellular fluid : Fluid outside cells, including blood plasma and interstitial fluid. It is the main broad compartment containing body fluids outside cells.
Renal physiology : The study of kidney functions, including filtration, reabsorption, secretion, and urine formation. Kidneys adjust water and solute excretion to regulate body-fluid volume and composition.
Fluid therapy : The clinical administration of fluids to correct or prevent deficits, excesses, or electrolyte disturbances. Treatment choices depend on which fluid compartment and deficit require correction.
Blood : A circulating connective tissue composed of plasma and formed cellular elements. Unlike many body fluids, it circulates within vessels and contains red and white blood cells.
Intracellular fluid : The water-based fluid contained within cells. It accounts for most body water and differs chemically from extracellular fluid.
Lymphatic system : A network of vessels, tissues, and organs that returns lymph to the bloodstream and supports immunity. It collects excess interstitial fluid and returns it to circulation.
Dehydration : A condition in which water loss exceeds water intake, reducing total body water. It is a common disturbance of body-fluid balance with potentially serious effects.
Lymph : Fluid carried by lymphatic vessels, derived largely from interstitial fluid and containing immune cells. It returns tissue fluid to blood and differs from blood in composition and route.
Interstitial fluid : Extracellular fluid occupying spaces between tissue cells. It bathes cells and mediates exchange with blood.
Capillary exchange : The movement of water and solutes between blood capillaries and surrounding tissues. It governs the exchange that forms and replenishes interstitial fluid.
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