HSS 2342 Lecture Notes - Lecture 11: Hard Water, Kidney Stone Disease, Fluid Balance
4 Apr 2018
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Document Summary
It is vital that the body maintain an appropriate water balance, such that fluid output = fluid input. Water balance: every cell contains fluid and is surrounded by fluid. Intracellular: extracellular (interstitial, continual turnover, rapid adjustments to maintain homeostasis. Water sources and losses: vegetables and fruits can contain up to 90% water, while meats and cheeses contain about. In terms of losses, we lose water in our urine mainly. The more we drink the more urine we produce; however, we need to make about 500 ml of urine daily to rid the body of wastes. Losses from the lungs and skin (insensible losses) are believed to account for about half of all daily losses: urine + insensible losses = 2. 5l per day. Metabolic water: our bodies produce water during catabolic metabolic reactions, known as condensation reactions, by oxidizing macromolecules our cells produce water: from 100 g fat, carbohydrate, protein we obtain, 107, 55, 44 g water, respectively.
