Effect of Sodium Influx on a Neuron Membrane

Topic: Physiology

Created on Monday, September 1 2014 by jdmiles

Last modified on Monday, September 1 2014.

 
        A) Inhibitory
 
        B) Excitatory
 
        C) Depressing
 
        D) Negligible
 
        E) Psychedelic
 

 

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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

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A) Inhibitory

This answer is incorrect.

When sodium (Na⁺) ions flow from the extracellular space into the cytoplasm of a cell, the effect is excitatory. The cell membrane becomes depolarized, or less negative.  (See References)

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B) Excitatory

This answer is correct.

When sodium (Na⁺) ions flow from the extracellular space into the cytoplasm of a cell, the effect is excitatory. The cell membrane becomes depolarized, or less negative.  (See References)

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C) Depressing

This answer is incorrect.

When sodium (Na⁺) ions flow from the extracellular space into the cytoplasm of a cell, the effect is excitatory. The cell membrane becomes depolarized, or less negative.  (See References)

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D) Negligible

This answer is incorrect.

When sodium (Na⁺) ions flow from the extracellular space into the cytoplasm of a cell, the effect is excitatory. The cell membrane becomes depolarized, or less negative.  (See References)

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---

E) Psychedelic

This answer is incorrect.

When sodium (Na⁺) ions flow from the extracellular space into the cytoplasm of a cell, the effect is excitatory. The cell membrane becomes depolarized, or less negative.  (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)

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physiology
Effect of Sodium Influx on a Neuron Membrane
Question ID: 90114165
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 09/01/2014
Modified: 09/01/2014
Estimated Permutations: 600