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Lecture4 - Instructor George Chavez Lecture 4 When one...

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Instructor: George Chavez Lecture 4 9/14/2011
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When one thing leads to another Every human action is a product of a chain reaction of neurons Neurons Cells in the nervous system that transmit and receive information Literally billions of cells A chain reaction of transmission
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3 Essential parts _____ Contains the nucleus of the cell _____ Branching structures that receive information _____ Single fiber that sends information
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Down the axon _______ ________ WITHIN a neuron Neuron to neuron _______ _________ BETWEEN 2 neurons
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The chain reaction… All things being equal, an environment strives for equilibrium Stand at one end of a warm room and eventually the draft from an open window will reach you ________ ________ The axon, before the action potential, has an electrical charge of -70 mv compared to the outside. The sodium-potassium pump pushes out more positive ions (3 NA + ions) than pulls in (2 K + ion)
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Inside axon Outside axon Resting potential: -70mv + + + + + + + + + + + + + - - - - - - - - - - -
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