Step 1 → Neurology and Special Senses Cranial Nerves and PathwaysPreview this topic sectionPreview the conditions. Plans unlock the full Step 1 details when you need them. Free Biochemistry Free Microbiology Plans Cranial Nerves and Pathways conditions Bell Palsy Cavernous Sinus Syndrome CN III Palsy CN IV Palsy CN V Motor Lesion CN VI Palsy CN X Lesion CN XI Lesion CN XII Lesion Ramsay Hunt Syndrome