The brainstem and forebrain give rise to 12 pairs of cranial nerves (CN), which serve the head and neck (except CN X, the vagus, which travels to the viscera). A standard mnemonic is: "Oh Oh Oh To Touch And Feel Very Green Vegetables, A H."

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Neuroanatomy Jun 2026

The brainstem and forebrain give rise to 12 pairs of cranial nerves (CN), which serve the head and neck (except CN X, the vagus, which travels to the viscera). A standard mnemonic is: "Oh Oh Oh To Touch And Feel Very Green Vegetables, A H."