The<unk>  arises from the anterior rami of the C5, C6, and C7 cervical spinal<unk> . The root from C7 may occasionally be absent. The roots from C5 and C6 pierce through the scalenus medius, while the C7 root passes in front of the muscle. The<unk>  descends through the cervicoaxillary canal. It is posterior to the brachial plexus, and the axillary artery and vein. This takes it deep to the clavicle. It rests on the outer surface of the serratus anterior muscle. It extends along the side of the thorax to the lower border of the serratus anterior muscle. It supplies filaments to each of its digitations (finger-like projections).
Long thoracic nerve
Ventral ramus of spinal nerve
Accelerator nerve
Median nerve
Cardiopulmonary nerves
Sensory nerve
Anterior interosseous nerve
Auriculotemporal nerve