CFD 3240 Lecture Notes - Lecture 19: Red Blood Cell, Ph, Fluid Balance
20 Feb 2019
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Document Summary
Every day, approximately 180 liters of fluid are filtered from the blood, but only a small fraction of that is excreted. The chemical makeup of body fluid changes constantly as water and solutes enter and leave it. Inside the cells (intracellular; icf: outside the cells (extracellular; ecf) Interstitial fluid: plasma, other (lymph, csf, mucus, urinary system, maintains stable conditions in the ecf, body fluid occurs in two compartments: one inside cells and one outside cells. Ingested in solids and liquids: metabolically derived. Excess water and excess or harmful solutes removed. Solutes enter extracellular fluid (ecf) from food, respiration, and metabolism. Food brings nutrients and mineral ions: water goes with by diffusion, respiratory system brings oxygen to the blood, metabolism of cells. The activities of the urinary system coordinate with other organ systems. Excretes hydrogen ions and reabsorbing bicarbonate ions this maintains acid-base balance (blood ph ~7. 4) The urinary system: built for filtering and waste disposal.
