Physiology 2130 Lecture Notes - Extracellular Fluid, Fluid Compartments, Homeostasis
25 Feb 2013
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Document Summary
Our internal environments are bathed in fluids. Because of homeostasis, the volume of the fluid and the concentration of ions is closely controlled so our organ systems can function properly. The body is divided into two major fluid compartments: Intracellular fluid compartments (icf): inside all cells: extracellular fluid compartments (ecf): everything outside the cells. The extracellular fluid which makes up the internal environment of the body can be divided into. Interstitial fluid compartment: the fluid directly outside, bathing the cells: plasma: watery portion of the blood. Average 70 kg (154 lb. ) person: the total body water (tbw) found in all compartments is 42 liters (l) or 11. 11 gallons. Plasma is a pale yellow fluid that consists of about 92% water and 8% of other substances such as proteins, nutrients, ions, gases and waste products. Plasma is a colloidal solution a liquid containing suspended substances that do not settle out of solution: most suspended substances are plasma proteins such as.
