PHYSIOLOGICAL CHARACTERISTICS OF A NERVE FIBRE ::
Excitability or Irritability::
it is the property that enables the nerve tissue to respond to stimuli This property is very well developed in the receptor endings however a nerve fibre may so be stimulated at any point along its course
Conductivity ::
It is the ability of the nerve to transmit impulses The volocity of the impulse is rapid The impulse slows down a bit at the synapse where for example a sensory neuron gives the impulse to a connecting neuron Resistance at the synapses varies considerably it is high when we are learning a new skill but with practice the resistance is lowered and we are able to perform the skill more rapidly and efficiently
ALL OR NONE LAW ::
Nerve like muscle tissue abides by the All or None Law when stimulated the nerve fibre will either respond to its maximum ability or there will be no response The impulse is self propagating that is the depolarization of a portion of the nerve serves as a stimulus for the depolarization of the next portion of the nerve
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