Some of the internal kinetic energy of amorphous substances can be in the form of interparticle bonds. A broken interparticle chemical bond and associated strain-releasing local adjustment in centers of vibration form a<unk> , an elementary configurational excitation in an amorphous material.<unk> s help to understand the transition from a solid to a fluid with viscous flow.
Configuron
Dendrite
Ganglion
Plexus
Interneuron
Spindle neuron
Buchnera 
Neuron