Cranial nerves are nerves that emerge directly from the brain, in contrast to spinal nerves, which emerge from segments of the spinal cord. In humans, there are traditionally twelve pairs of cranial nerves. Only the first and the second pair emerge from the cerebrum; the remaining ten pairs emerge from the brainstem.
This diagram labels the cranial nerves, including olfactory, oculomotor, trochlear, abducens, hypoglossal, vestibulocochlear, accessory, vagus, facial, glossopharangeal, facial, trigeminal, and optic.
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"Brain human normal inferior view with labels en-2."