Talk about the axon

Cylindrax: unlike dendrites, the axon is a unique cytoplasmic process of the neuron having a constant diameter. Usually it is thinner, longer, more rectilinear than the dendrites of the same neuron. The axon originates in a cone-shaped region of the cell body called implantation cone (axon hillock) where there are some ribosomes but no Nissl bodies and no Golgi. Its initial segment is the site of the action potential of nerve impulses and contains microtubules and neurofilaments. Its main segment (that could be more or less long) contains neurofilaments, microtubules and mitochondria. On its way the axon can emit lateral (collateral) branches and it ends with fine branches, called axonal endings, at the end of which are the synaptic buttons.