A patient Rasmu presents with eye deviated laterally and slightly downward. The upward gaze is impaired and medial rotation is not possible. Which nerve is involved.
Correct Answer: III
Description: Ans. is 'a' i.e. III C.N Muscular supply of Extraocular musclesAll muscular of the eye are supplied by the III C.N except the superior oblique (by IV C.N ) & Lateral rectus (by VI C.N).Paralysis of III C.N would spare the sup. Oblique and the lateral rectus and the unopposed action would pull the eye outwards & downwardsAction of Superior oblique- downwards & laterallyAction of Lateral rectus - laterally
Category:
Anatomy
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