<P> As in the sympathetic nervous system , efferent parasympathetic nerve signals are carried from the central nervous system to their targets by a system of two neurons . The first neuron in this pathway is referred to as the preganglionic or presynaptic neuron . Its cell body sits in the central nervous system and its axon usually extends to synapse with the dendrites of a postganglionic neuron somewhere else in the body . The axons of presynaptic parasympathetic neurons are usually long , extending from the CNS into a ganglion that is either very close to or embedded in their target organ . As a result , the postsynaptic parasympathetic nerve fibers are very short . </P>
<P> As in the sympathetic nervous system , efferent parasympathetic nerve signals are carried from the central nervous system to their targets by a system of two neurons . The first neuron in this pathway is referred to as the preganglionic or presynaptic neuron . Its cell body sits in the central nervous system and its axon usually extends to synapse with the dendrites of a postganglionic neuron somewhere else in the body . The axons of presynaptic parasympathetic neurons are usually long , extending from the CNS into a ganglion that is either very close to or embedded in their target organ . As a result , the postsynaptic parasympathetic nerve fibers are very short . </P>
where do the axons of the parasympathetic division originate from
where do the axons of the parasympathetic division originate from
CNS
CNS