Another example of a synthesis reaction is the formation of sodium chloride (table salt). Because of the very high reactivities of sodium metal and chlorine gas, this reaction releases a tremendous amount of heat and light energy.
Schwann cells make myelin in the peripheral nervous system (PNS: nerves) and oligodendrocytes in the central nervous system (CNS: brain and spinal cord). In the PNS, one Schwann cell forms a single myelin sheath (Figure 1A).
â¢ Neurons contain Nisslâs granules but not in Neuroglia. â¢ Neuron has an axon but, not in neuroglia. â¢ Neuroglia form myelin but those are present and functional in the axon of neurons. â¢ Neuroglia form packaging media between nerve cells in the brain and spinal cord and but not the neurons. Neuron has an axon but, not in neuroglia. â¢ Neuroglia form myelin but those are present and functional in the axon of neurons. â¢ Neuroglia form packaging media between nerve cells in the brain and spinal cord and but not the neurons.