Lesser auricular nerve
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The lesser auricular nerve originates from the cervical plexus, composed of branches of spinal nerves C2 and C3.
suboccipital - cervical (greater occipital, third occipital, cervical plexus, brachial plexus) - thoracic (intercostal - intercostobrachial - subcostal) - lumbar (lumbar plexus, lumbosacral trunk, superior cluneal nerves) - sacral (posterior branches of sacral nerves, medial cluneal nerves, sacral plexus) - coccygeal (coccygeal plexus)