motor nerve

neurone pyramidal candle interneuron pathway dorsal upper limb cervical ulnar peripheral neuropathy plexus scapular suprascapular trunks radial reflexes axillary phrenic injury axilla trauma arm biology control hand muscle nervous system pseudo unipolar dermatomes muscles subscapular cervicobrachial nerve roots brachial plexopathy musculocutaneous terminal branches neurological entrapment receptor diagram structure medicine myelin human central medical neurology anatomy motor nerves axon nervous spinal sensory brain cell science nerve synapse signal innervation tissue neuron referred brachial accessory compression thoracodorsal median cords myotomes shoulder girdle long thoracic physiology