Nerve injuries may occur in the central nervous system (CNS) due to trauma or disease, but they are more frequent in peripheral nerves. Peripheral neural damage may be caused by perforations, cuts, stretch, traction, and burns. The nerve cell (neuron), does not proliferate through mitosis as do other somatic cell types in other tissues; when its axon is cut from the cell, it is swallowed by macrophages. However, the remaining segment of the axon that is connected to the cell starts to grow and is involved with the proliferating Schwann cells present in the nervous fiber membrane, thus forming a new axonal tube. The Schwann cells provide the newly formed axonal tube with layers of covering myelin that are necessary for synaptic transmission and nervous reflex. Therefore, nerves torn apart by cuts, perforation, or partially lacerated by excessive stretching or traction accompanied...