BIOL 1550 Lecture Notes - Lecture 9: Extracellular Fluid, Water Intoxication, Oxidative Phosphorylation
Document Summary
*water and minerals are primary components of body fluids and also perform other functions in the. Sources: fluids, fruits, veggies (best source pure water)-minimum 4 cups a day. Oil spills, putting medications down the drain, e. coli. Water as a nutrient in the body: structure (intracellular, extracellular, and interstitial fluid) Digestion and absorption (most absorbed in small intestine) Metabolism (not metabolized, integral component of metabolic processes) Functions of water: structural component of cells, body temp regulation, lubricant, cushions body tissues, solvent for transport of nutrients and waste, source of trace minerals, reactant: medium for biochemical reactions. Water drawn from salivary glands to provide more fluid for blood. If thirst mechanism faulty=conserve water by reducing urine output (illness, physical exertion, aging) Fluid and electrolytes: maintain balances; cells control movement of electrolytes. Vascular, cellular, or intracellular dehydration (causes diarrhea, vomiting, high fever, diuretics, sweating, polyuria) Elderly and infants most at risk: fluid volume excess and edema.
