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In a man, abducens nerve is injured. Which one of the following functions will be affected?

1. Movement of the eye ball
2. Movement of the tongue
3. Swallowing
4. Movement of the neck

Correct answer: Movement of the eye ball

Solution

The abducens nerve (cranial nerve VI) innervates the lateral rectus muscle, which moves the eyeball laterally. Injury to this nerve therefore impairs eye movement, especially abduction.

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