1.Joseph,a man in his early 70s, was having problems chewing his food.He was asked to stick out his tongue.It deviated to the right, and it\'s right side was quite wasted.What cranial nerve was impaired? 2.Derek got hit in the back of the neck with a baseball, and now he can\'t shrug one shoulder.Which cranial nerve is involved? Solution 1. hypoglossal(XII craniel nerve- controls both extrinsic and intrinsic muscles of the tongue). 2. Accesory nerves(XI craniel nerve, - helps in tilting and turning head).