Autonomic nervous system anatomical organization

Fig. 7.3 summarizes the anatomical features of the autonomic nervous system. This differs from the voluntary system (exemplified by the neuro-niuscular junction in Fig. 7.1) in that one extra control point exists for each fibre, namely an extra synapse (situated in a ganglion). In sympathetic fibres, these ganglia are not far from the spinal cord in parasympathetic fibres, the ganglia are near the end-organ, i.e. the one which the nerve is to influence. As... 

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