Signalling involves class pre-ganglionic B neurons forming diffuse synapses on post-ganglionic neurons

The Sympathetic division of the ANS uses ACh and the Parasympathetic division uses Noradrenaline as the transmitter

A class A neuron contacts a class C post-ganglionic neuron

Signalling involves nicotinic ACh receptors

Signalling between neurons involves the use of varicosities