Abstract
This article describes the principles of biological transport. The transport phenomena mean the variation in time and space of generalized forces when they generate flows for which conservation laws apply. After we describes: mass-, impulse-, energy- and electric-charge-transport and their mathematical characteristic equations. It emphasizes the physical aspects of transport and examines the assumptions and concepts underlying the equations most widely used to characterize transport. In the living organisms, flows are not generated only by the conjugated generalized forces, but also by the simultaneous action of other forces, so appears the cross-effects. The biophysical modeling offer a „language” of quantitative and qualitative processsing of experimental data, being compatible and adequate to the laws of biology.
 
Highlights
The modelling method in biophysics consists of the creation of certain devices, with which processes analogue with those happening in living organism are studied
The biophysical model though abstract reasoning leads to models of the phenomena which by simplifying and isolating some aspects of the phenomena, discover laws and relationships which describe with a certain approximation the behaviour or functioning of bodies or biological ensembles
Homeostasis is the ability to maintain the structure and functions of the living organism within optimal limits, on the basis of the adaptive requirements imposed by the surrounding environment
Summary
The modelling method in biophysics consists of the creation of certain devices (models), with which processes analogue with those happening in living organism are studied. The biophysical model though abstract reasoning leads to models of the phenomena which by simplifying and isolating some aspects of the phenomena, discover laws and relationships which describe with a certain approximation the behaviour or functioning of bodies or biological ensembles. Homeostasis is the ability to maintain the structure and functions of the living organism within optimal limits, on the basis of the adaptive requirements imposed by the surrounding environment. Homeostasis is a dynamic process of permanent adaptation (by the transport phenomena), each of its sequences representing a new equilibrium which, in the following sequence, will be at a different level, in accordance with the requirement, between the permissive limits of the systems reactivity
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