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Resting Potential of a Neuron 2

Topic: Physiology

Created on Monday, September 1 2014 by jdmiles

Last modified on Monday, September 1 2014.

The membrane resting potential most closely approximates the equilibrium potential of which ion?

 
        A) Chloride
 
        B) Calcium
 
        C) Sodium
 
        D) Potassium
 
        E) Uranium
 

 


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This question was created on September 01, 2014 by jdmiles.
This question was last modified on September 01, 2014.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) Chloride

This answer is incorrect.


A human neuron's resting potential is influenced by multiple ions, but the equilibrium potential of Potassium (K+) ions has the most significant contribution.   (See References)

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B) Calcium

This answer is incorrect.


A human neuron's resting potential is influenced by multiple ions, but the equilibrium potential of Potassium (K+) ions has the most significant contribution.   (See References)

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C) Sodium

This answer is incorrect.


A human neuron's resting potential is influenced by multiple ions, but the equilibrium potential of Potassium (K+) ions has the most significant contribution.   (See References)

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D) Potassium

This answer is correct.


A human neuron's resting potential is influenced by multiple ions, but the equilibrium potential of Potassium (K+) ions has the most significant contribution.   (See References)

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E) Uranium

This answer is incorrect.


Uranium ions usually have negligible contribution to the resting potential of a human neuron.   (See References)

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References:

1. John Nolte; three-dimentional brain reconstructions by John Sundsten. The human brain: an introduction to its functional anatomy. Philadelphia, PA : Mosby/Elsevier, c2009. (ISBN:0323041310) Advertising:
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physiology
Resting Potential of a Neuron 2
Question ID: 90114011
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 09/01/2014
Modified: 09/01/2014
Estimated Permutations: 120
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