BearCh03-ACRQedt - Chapter 03The Neuronal Membrane at Rest...

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Chapter 03–The Neuronal Membrane a t Rest Answers to Chapter Review Questions Page 1 of 2 Copyright © 2007. Lippincott Williams & Wilkins. Ancillary material to accompany Bear et al.: Neuroscience: Exploring the Brain, 3e Question 1: What are the two functions that the proteins perform in the neuronal membrane to establish and maintain the resting membrane potential? Answer: Proteins in the neuronal membrane: 1) Provide channels that control the movement of specific ions across the neuronal membrane and 2) Pump sodium and potassium ions across the membrane against their concentration gradient to maintain the resting membrane potential. Question 2: On which side of the neuronal membrane are Na + ions more abundant? Answer: The neuronal membrane potential depends on the ionic concentrations on either side of the membrane. K + is more concentrated on the inside of the neuronal membrane, whereas Na+ and Ca2+ are more concentrated on the outside.
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This note was uploaded on 09/09/2009 for the course SPHSC 449 taught by Professor Peter during the Summer '09 term at University of Washington.

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BearCh03-ACRQedt - Chapter 03The Neuronal Membrane at Rest...

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