peripheral neuropathy

The image offers a detailed depiction of a neuron, highlighting the Node of Ranvier and its role within the peripheral nervous system (PNS). This illustration provides a clear view of the neuron’s structure, including the cell body, axon, and supporting Schwann cells, which are essential for nerve impulse transmission. 

The cutaneous innervation of the upper limb represents a complex network of sensory distributions critical for clinical assessment and diagnosis. Understanding these dermatomes and their nerve supply patterns is essential for medical professionals in evaluating neurological conditions and planning surgical interventions.