The first four of the cranial nerves originate from the midbrain.
The middle four cranial nerves originate from the pons.
- trigeminal nerve (CN V)
- abducens nerve (CN VI)
- facial nerve (CN VII)
- vestibulocochlear nerve (CN VIII)
The final four cranial nerves originate from the medulla oblongata.
- glossopharyngeal nerve (CN IX)
- vagus nerve (CN X)
- accessory nerve (CN XI)
- hypoglossal nerve (CN XII)
In adults, all brainstem nuclei are located within the tegmentum, the posterior section of the brainstem (except in the midbrain where the quadrigeminal plate is most posterior).
- cranial nerves: main article - mnemonic
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