Intracerebral white matter tracts 02

Topic: Anatomy

Created on Thursday, September 25 2008 by jdmiles

Last modified on Thursday, September 25 2008.

 
        A) Posterior commissure
 
        B) Anterior commissure
 
        C) Optic nerve
 
        D) Mammilothalamic tract
 
        E) External capsule
 

 

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This question was created on September 25, 2008 by jdmiles.
This question was last modified on September 25, 2008.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS

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A) posterior commissure

This answer is incorrect.

The unnecessarily large green arrow points to the anterior commissure. The posterior commissure cannot be seen in this slice.  (See References)

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B) anterior commissure

This answer is correct.

Yep. The unnecessarily large green arrow points to the anterior commissure.  (See References)

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C) optic nerve

This answer is incorrect.

The unnecessarily large green arrow points to the anterior commissure. The white fiber tract just inferior to the anterior commissure is probably the optic tract, and the optic nerve is probably anterior to this slice.  (See References)

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D) mammilothalamic tract

This answer is incorrect.

The unnecessarily large green arrow points to the anterior commissure. The mammilothalamic tract is not obvious in this image.  (See References)

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E) external capsule

This answer is incorrect.

The unnecessarily large green arrow points to the anterior commissure. The external capsule is also seen in this image, but is lateral and at an angle to the anterior commissure.  (See References)

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References:

1. Nolte, J. (1993). The Human Brain: An Introduction to Its Functional Anatomy. Mosby, St. Louis. (ISBN:0801674832)	Advertising:
2. Duane E Haines, . Neuroanatomy: An Atlas of Structures, Sections, and Systems (Neuroanatomy: An Atlas of Strutures, Sections, and Systems (Haines)). Lippincott Williams & Wilkins (ISBN:0781763282)	Advertising:

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anatomy
Intracerebral white matter tracts 02
Question ID: 092508215
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 09/25/2008
Modified: 09/25/2008
Estimated Permutations: 25200