2. Draw a diagram showing the major functional parts of a neuron. - Label the cell body, axon, nucleus, cytoplasm, dendrites, and synapses. Where are glial cells in relation to the neurons? - What direction does information travel within a neuron? 2. Draw a diagram showing the major functional parts of a neuron. - Label the cell body, axon, nucleus, cytoplasm, dendrites, and synapses. Where are glial cells in relation to the neurons? - What direction does information travel within a neuron?.