The dorsal scapular nerve arises from the brachial plexus, specifically from spinal nerves C4 and C5. It provides motor innervation to the rhomboid muscles, which pull the scapula towards the spine and Levator scapulae muscle, which elevates the scapula. The brachial plexus is an arrangement of nerve fibres (a plexus) running from the spine (vertebrae C5-T1), through the neck, the axilla (armpit region), and into the arm. ... Location The levator scapulae takes its origin from the posterior tubercles of the tranverse processes of the C1 to C4 vertebrae. ...
Categories: Anatomy stubs | Peripheral nervous system
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