The parasympathetic system is characterized by: 1. Preganglionic neurons originate in the brainstem and the sacral region.
2. Preganglionic axons are long
3. Postganglionic axons are short
4. Preganglionic axons synapse in terminal ganglia.
5. Preganglionic axons and are postganglionic cholinergic (using acetylcholine as a neurotransmitter).
6. The system takes care of restoring the functional requirements for balance in the body.
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