HESC2501 Study Guide - Midterm Guide: Plasma Osmolality, Extracellular Fluid, Fluid Compartments

• School: UNSW, UNSW Sydney
• Department: Health and Exercise Science
• Course: HESC2501
• Professor: All

Document Summary

Learning objectives: physiology: describe the major subdivisions of the body fluids and the approximate percentage of total body water, sodium and potassium in each compartment. Extracellular fluid (ecf) surrounds the cells, composed of : Interstitial fluid (fluid in extracellular spaces between cells) Plasma: liquid component of blood prevents rbcs and plasma proteins from crossing into isf. Isf and plasma separated by capillary vascular endothelium that. Luminal fluid: input and output of body, separated from ecf by epithelium. Icf: 2/3 of tbw, . 4 x body weight. Ecf: 1/3 of tb, 0. 2 x body weight. Isf: of ecf, or . 15 x bw. Inside cell: na-low, k-high, cl- low, proteins- high, Outside cell: na- high, k-low, cl- high, proteins - low. Blood volume = plasma volume times 100%/hematocrit: be able to use the normal concentrations of na+, k+, cl-, and hco3- in extracellular and intracellular fluids to interpret electrolyte disorders, e. g. hyponatremia. Intracellular meq/l low: 12 low: 4 high: 150.