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Intracerebral white matter tracts 01

Topic: Anatomy

Created on Sunday, February 10 2008 by jdmiles

Last modified on Sunday, February 10 2008.

The ansa lenticularis:

 
        A) Projects across the midline, connecting homologous areas of the temporal lobes
 
        B) Projects from the hippocampal formation to the septal area and mammillary bodies
 
        C) Projects from the mammillary bodies to the anerior nucleus of the thalamus
 
        D) Receives afferents from the septal area, and projects to the midbrain reticular formation
 
        E) Projects from the globus pallidus to the thalamus
 

 


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This question was created on February 10, 2008 by jdmiles.
This question was last modified on February 10, 2008.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) projects across the midline, connecting homologous areas of the temporal lobes

This answer is incorrect.


The ansa lentiuclaris is a fiber tract connecting the globus pallidus and ipsilateral thalamus. The anterior commissure connects areas of the left and right temporal lobes with each other.  (See References)

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B) projects from the hippocampal formation to the septal area and mammillary bodies

This answer is incorrect.


The ansa lentiuclaris is a fiber tract connecting the globus pallidus and ipsilateral thalamus. The fornix projects from the hippocampal formation to the septal area and mammillary bodies.  (See References)

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C) projects from the mammillary bodies to the anerior nucleus of the thalamus

This answer is incorrect.


The ansa lentiuclaris is a fiber tract connecting the globus pallidus and ipsilateral thalamus. The mammillothalamic tract connects the mammillary bodies and the anterior nucleus of the thalamus.  (See References)

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D) receives afferents from the septal area, and projects to the midbrain reticular formation

This answer is incorrect.


The ansa lentiuclaris is a fiber tract connecting the globus pallidus and ipsilateral thalamus. The habenula receives afferents from the septal area, and projects to the midbrain reticular formation.  (See References)

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E) projects from the globus pallidus to the thalamus

This answer is correct.


The ansa lentiuclaris is a fiber tract connecting the globus pallidus and ipsilateral thalamus.  (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. Wilde, E.A., Bigler, E.D., Haider, J.M., Chu, Z., Levin, H.S., Li, X., and Hunter, J.V. (2006). "Vulnerability of the anterior commissure in moderate to severe pediatric traumatic brain injury." J Child Neurol, 21(9) 769-76. (PMID:16970884)
3. Duane E. Haines; special contributions by John A. Lancon; illustrator, M. P. Schenk; photographer, G. W. Armstrong. Neuroanatomy: an atlas of structures, sections, and systems. Philadelphia : Lippincott Williams & Wilkins, c2004. (ISBN:0781746779)
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anatomy
Intracerebral white matter tracts 01
Question ID: 021008142
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 02/10/2008
Modified: 02/10/2008
Estimated Permutations: 600

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