The<unk>  is an arrangement of nerve fibres, running from the spine, specifically from above the fifth cervical vertebra to underneath the first thoracic vertebra (C5-T1). It proceeds through the neck, the axilla (armpit region) and into the arm.
Brachial plexus
Cervical plexus
Lumbar plexus
Sacral plexus
Sciatic nerve
Lumbar nerves
Masseteric nerve
Saphenous nerve