If a patient is instructed to say "ah" and the uvula deviates upward toward the left side, which cranial nerve is most likely impaired?

Explanation

The upward deviation of the uvula to the left when saying "ah" suggests weakness on the right side, indicating damage to the right accessory nerve. This nerve controls muscles that influence the position of the uvula, and injury on the right causes the uvula to be pulled toward the left.