Why is neuronal synaptic conduction mostly ohodromic?
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.
Dendrites cannot be depolarized
Once repolarized, an area cannot be depolarized
The strength of antidromic impulse is less
Chemical mediator is localised only in the presynaptic terminal