Topic summary
Cranial nerve zero
Extracted from the Wikipedia article Terminal nerve.
The terminal nerve, also known as cranial nerve zero or simply as CN 0, is a nerve that was not included in the seminal classification of the cranial nerves as CN I through CN XII, but has since been recognized and listed in TA2. It was discovered by German scientist Gustav Fritsch in 1878 in the brains of sharks, and was first found in humans in 1913. Studies have confirmed that the terminal nerve is a common finding in the adult human brain.