Interpretation of clinical findings of BPI in newborns depends on knowledge of peripheral nervous system (PNS) structures and physiology. All nervous system structures originate from the embryonic ...

The condition affects primarily the upper trunk of the brachial plexus, which is part of the nerves that extend to the arms. These nerves are responsible for the muscular function and sensation of ...

and the peripheral nervous system (motor nerves, sensory nerves, cranial and spinal nerves, autonomic ganglia, and plexuses).