Chapter Details

Chapter-01 Osmotic Pressure, Surface Tension and Viscosity: Important Physical Forces Operating in Human Body
An Introduction to Medical Biophysics

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  1. Parkash Parveen
ISBN 9788171795932
DOI 10.5005/jp/books/11603_1
Edition 1/e
Publishing Year 1998
Pages 12
Author Affiliations
  1. Senior Lecturer, Biophysics, Government Medical College, Chandigarh, India
Chapter Keywords Vapour pressure, Freezing point, Boiling point, Hydrostatic pressure, Charles law, Osmotic coefficient, Cryoscopic constant, Reflection coefficient, Osmotic pressure, Hydraulic conductivity, Plasma proteins, Oncotic pressure, Ultra filtration, Oedema, Venous obstruction, Haemorrhage, Sodium-potassium pump, Dialysis, Artificial kidney, Traubes stalagometer, Specific gravity, Gibb’s Thomson principle, Hay’s test, Bile salts, Surfactant, Lipoproteins, Alveolar stability, Absorption, Interfacial tension, Viscosity gradient, Poise stoke, Kinematic viscosity, Intrinsic viscosity, Simha’s factor, Assymetric proteins, Leukaemia, Thermoproteins, Cryglobulins, Viscometers
The interaction between macromolecules, solutes, solvents, electrolytes and colloids in human body has been analysed in this chapter. The most important physical forces at work in living system include osmotic pressure, surface tension and viscosity. Any disturbance in the action of these forces inflicts illness that often comes to the attention of an astute and inquisitive physician who asks for a test. This chapter covers different methods and units employed in quantifying forces of osmosis, surface tension and viscosity. Osmosis and its allied forces mainly operate in kidney to regulate fluid volume of the body. Surface tension is the key force at work in alveoli of the lungs. Blood flow is constantly under influence of viscosity of non–newtonian fluid, therefore, any change in viscosity has a direct bearing on the blood flow and this has been discussed at length in the text. Analysis of the factors affecting osmosis, surface tension and viscosity makes this chapter comprehensive and fascinating.