Uvula deviated to right side, which nerve is involved?
Ans: a (Left vagus)In case of unilateral palatal palsy, the palatal arch on that side is at a lower level than on the healthy side. On saying 'ah', the uvula is pulled to the healthy side by the normal palate.Remember the code--Cranial nerve palsies 12 & 5 (12+5=17) cause movement towards the side of weakness, and weakness of cranial nerves 7 and 10(10+7= 17) cause movement towards opposite or healthy side.Don't get surprised this was asked in the morning session of the exam in anatomy.......
C.N.S.
Left vagus
Left glossopharangeal
Left hypoglossal
Right hypoglossal
Left vagus