<prompt> Why is neuronal synaptic conduction mostly ohodromic?Dendrites cannot be depolarizedOnce repolarized, an area cannot be depolarizedThe strength of antidromic impulse is lessChemical mediator is localised only in the presynaptic terminal  <response>: Characteristic of chemical synapses is that it always transmit signals in one direction, from the neuron that secretes the transmitter substance, called the presynaptic neuron, to the neuron on which the transmitter acts, called the postsynaptic neuron. Ref: Principles of Animal Physiology By Moyes, Page 218. 