I am studying for step 1 and First-Aid has a page about cranial nerve lesions and the associated physical findings. I am having trouble understanding/believing their description of CN V and XI lesions. It says in CN V lesion the jaw deviates toward the side of the lesion. Is this during opening? closing? at rest? all of the above? And why? Also, it says that a CN XI lesion causes the head to deviate away from the side of the lesion. This one makes no sense to me. Please help.