What are cranial nerves commonly abbreviated as?

Cranial nerves are commonly abbreviated as "CN." This abbreviation is widely recognized among medical professionals and is used in various contexts, including clinical documentation, education, and research. Each cranial nerve, which emerges directly from the brain rather than the spinal cord, is typically numbered I through XII, leading to a standard format like CN I for the olfactory nerve and CN II for the optic nerve. This consistent abbreviation helps streamline communication and understanding when discussing conditions, anatomy, and procedures related to the cranial nerves.

The other abbreviations are not standard in medical terminology, making them less familiar and potentially confusing in clinical discussions. Thus, "CN" stands out as the correct and widely accepted abbreviation for cranial nerves.