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

 


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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 from the ciliary ganglion to the sphincter of the iris

This answer is incorrect.


The ansa lentiuclaris is a fiber tract connecting the globus pallidus and ipsilateral thalamus. The short ciliary nerves project from the ciliary ganglion to the sphincter of the iris.  (See References)

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B) 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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C) 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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D) 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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E) 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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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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