Dillon MCQ 21

Topic: Anatomy

Created on Saturday, November 26 2022 by dillon

Last modified on Saturday, November 26 2022.

 
        A) Medial rectus
 
        B) Lateral rectus
 
        C) Inferior oblique
 
        D) Superior oblique
 

 

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This question was created on November 26, 2022 by dillon.
This question was last modified on November 26, 2022.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS

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A) Medial rectus

This answer is incorrect.

M rectus is the principle muscle of ADDuction, the S/I recti are used to a lesser degree  (See References)

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B) Lateral rectus

This answer is incorrect.

L rectus is the principle muscle of ABduction, the S/I recti are used to a lesser degree.  (See References)

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C) Inferior oblique

This answer is correct.

The inferior oblique is the princile muscle for extorsion. The inferior oblique is used as well, but to a much lesser degree.  (See References)

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D) Superior oblique

This answer is incorrect.

S. oblique is the primary muscle of intorsion. The superior retus is also involved to a lesser degree  (See References)

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References:

1. Vanderah, Todd W., and John Nolte. “Ch. 21 Eye Movements” Nolte's Essentials of the Human Brain, Elsevier, Philadelphia, PA, 2019.

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anatomy
Dillon MCQ 21
Question ID: 112622057
Question written by dillon. (C) FrontalCortex.com 2006-2009, all rights reserved. Created: 11/26/2022
Modified: 11/26/2022
Estimated Permutations: 24