4.4 Synaptic delay
When a nerve impulse reaches the presynaptic terminal is approximately 0.5 ms. blank interval, called a synaptic delay if there are many neural synapse pathway, which will take the time to send a nerve impulse, but if there are fewer then synapse pathway is completed quickly. We can assess any reflex is a monosynapse or polysynapse in addition, synapse, it can also be divided according to the number of neuron synapse source 2.