White Matter and Gray Matter 1

Topic:

Created on Sunday, September 7 2014 by jdmiles

Last modified on Sunday, September 7 2014.

 
        A) Mostly neuron cell bodies
 
        B) Mostly axons
 
        C) Myelin but no axons
 
        D) Half axons, half cell bodies
 
        E) Choroid plexus
 

 

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This question was created on September 07, 2014 by jdmiles.
This question was last modified on September 07, 2014.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS

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A) Mostly neuron cell bodies

This answer is incorrect.

The unnecessarily large green arrow points to white matter tracts in this horizontal section of human brain. White matter consists mostly of axons, with few neuron cell bodies. The myelin surrounding the axons gives it the white appearance.  (See References)

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B) Mostly axons

This answer is correct.

The unnecessarily large green arrow points to white matter tracts in this horizontal section of human brain. White matter consists mostly of axons, with few neuron cell bodies. The myelin surrounding the axons gives it the white appearance.  (See References)

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C) Myelin but no axons

This answer is incorrect.

The unnecessarily large green arrow points to white matter tracts in this horizontal section of human brain. White matter consists mostly of axons, with few neuron cell bodies. The myelin surrounding the axons gives it the white appearance.  (See References)

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---

D) Half axons, half cell bodies

This answer is incorrect.

The unnecessarily large green arrow points to white matter tracts in this horizontal section of human brain. White matter consists mostly of axons, with few neuron cell bodies. The myelin surrounding the axons gives it the white appearance.  (See References)

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---

E) Choroid plexus

This answer is incorrect.

The unnecessarily large green arrow points to white matter tracts in this horizontal section of human brain. White matter consists mostly of axons, with few neuron cell bodies. The myelin surrounding the axons gives it the white appearance.  (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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White Matter and Gray Matter 1
Question ID: 090614232
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 09/07/2014
Modified: 09/07/2014
Estimated Permutations: 120