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. ...
The dorsalscapularnerve 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.
medial cord (ulnar, medial head of median nerve, medial antibrachial cutaneous, medial brachial cutaneous)
The term spinal nerve generally refers to the mixed spinal nerve, which is formed from the dorsal and ventral roots that come out of the spinal cord.
After the dorsal and ventral roots fuse to form a spinal nerve, the nerve bifurcates into dorsal and ventral primary rami.
The muscles that one particular spinal root supplies are that nerve´s myotome, and the dermatomes are the areas of sensory innervation on the skin for each spinal nerve.
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