There are 486 questions on various topics in Neurology in the FrontalCortex neurology question bank.

Extraocular muscles

Topic: Anatomy

Created on Tuesday, July 11 2006 by

Last modified on Wednesday, December 31 1969.

A 65 year-old male rutabaga farmer visits you in the Lincoln bedroom in the White House, complaining of diplopia.
You note that most of the time that he is facing you and talking, he sits with his chin raised, with his head extended and tilted toward his left shouder.
Based on this information alone, you suspect that there may be a paresis of which extraocular muscle?

A) Left inferior oblique

B) Right lateral rectus

C) Left superior rectus

D) Right superior rectus

E) Right oblique rectus

	= Go back to the top of the page.
	= Reload a different version of this question ().
	= Load a random question from the database.
	= Use this question as a template to create a totally NEW question.
	= Enter detailed rating for this question!
	= How users like you have rated this question.

This question was created on July 11, 2006 by .
This question was last modified on December 31, 1969.

ANSWERS AND EXPLANATIONS

A) left inferior oblique

This answer is incorrect.

This presentation is typical of a paresis of the right superior rectus. Paresis of the left inferior oblique muscle does not present in this way. (See References)


Please log in if you want to rate questions.

B) right lateral rectus

This answer is incorrect.

This presentation is typical of a paresis of the right superior rectus. A patient with a paresis of the right lateral rectus muscle will have impaired adbuction of the right eye, and is likely to try to minimize his diplopia by looking at the world with his chin turned toward his right shoulder and his left eye adducted. (See References)


Please log in if you want to rate questions.

C) left superior rectus

This answer is incorrect.

This presentation is typical of a paresis of the right superior rectus. A patient with a paresis of the left superior rectus muscle will have impaired elevation and inward rotation of the left eye, and is likely to try to minimize his diplopia by looking at the world with his chin raised, with his head extended and tilted toward his right shouder. (See References)


Please log in if you want to rate questions.

D) right superior rectus

This answer is correct.

This presentation is typical of a paresis of the right superior rectus. A patient with a paresis of the right superior rectus muscle will have impaired elevation and inward rotation of the right eye, and is likely to try to minimize his diplopia by looking at the world with his chin raised, with his head extended and tilted toward his left shouder. (See References)


Please log in if you want to rate questions.

E) right oblique rectus

This answer is incorrect.

This presentation is typical of a paresis of the right superior rectus. The right oblique rectus is not a real muscle. (See References)


Please log in if you want to rate questions.

References:

1. Ross, R.T. (1999). How to Examine the Nervous System, 3rd Edition. Appleton & Lange, Stamford, Connecticut. Pp. 45-60


Please log in if you want to rate questions.

FrontalCortex.com -- Neurology Review Questions -- Neurology Boards -- Board Review -- Residency Inservice Training Exam -- RITE Exam Review
anatomy
Extraocular muscles
Question ID: 0000003
Question written by . (C) FrontalCortex.com 2006-2009, all rights reserved. Created: 07/11/2006
Modified: 12/31/1969
Estimated Permutations: 0