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    The Nernst Equation and Action Potentials in the Nervous Sys

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    تاريخ التسجيل : 03/09/2007

    The Nernst Equation and Action Potentials in the Nervous Sys

    مُساهمة من طرف Admin في 23/11/2007, 10:37 am

    Contents



    Abstract


    This document discusses modeling of electric fields and ion concentration gradients in the nervous system. In particular, equilibrium and action potentials in neurons will be modeled with the Nernst equation. The relation to multiple sclerosis and heart health will also be discussed.

    Introduction


    A neuron is a nerve cell. The axon is the tail of the neuron that carries electrical (nerve) impulses from many locations within the body to and from the central nervous system. It is possible to model the differences in ion concentration and electrical gradients using basic chemistry. The Nernst equation which relates electric potential to concentration can be used to model electric fields within the nervous system. This web page will demonstrate calculations with the Nernst equation in an interactive way. It will then demonstrate generation of sudden changes in electric potential, called action potentials, within axons. An accompanying document, Getting Started Developing Interactive Web Interfaces for Scientific and Medical Applications, describes how to code the interactive parts of the user interface using dynamic HTML.

    The Cell Membrane, Ion Pumps, and Channels in a Neuron


    The structure of a neuron is shown below.

    Structure of a Neuron6

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      الوقت/التاريخ الآن هو 17/12/2018, 11:27 pm