Dorsal Scapular Artery
Dorsal Scapular artery
is variable in origin, arising from the second or third part of the subclavian
artery or as the deep branch of the transverse cervical artery. The dorsal scapular
artery courses through the trunks of the brachial plexus before turning deep
to the levator scapulae to supply the rhomboids.
When the axillary artery is ligated or obstructed, collateral circulation is provided by the dorsal scapular artery.