Arteries and Nerves That Supply the Superficial Layer of Muscles of the Back

The nerves that supply the muscles in this region are the:	spinal accessory nerve (cranial nerve XI) branches of cervical nerves 3 and 4 (not shown) dorsal scapular nerve thoracodorsal nerve
The arteries that supply the muscles in this region are the:	transverse cervical artery and its descending (dorsal scapular) branch thoracodorsal branch of the axillary artery

Superficial Muscles of Back

Bones of Posterior Shoulder

This is copyrighted© 1999 by Wesley Norman, PhD, DSc