The ganglia are formed from the cell bodies of a group of neurons. The ANS or autonomic nervous system associates with the CNS (central nervous system) and the somatic nervous system with the help of ganglia. The ganglia accommodate the cell bodies of sensory (afferent) and motor (efferent) cell bodies of the ANS.
The sympathetic ganglia are situated near to the central nervous system. The two sympathetic ganglia, which locate the cell bodies of post-ganglionic cell bodies are sympathetic trunk ganglia (situated alongside the vertebral column) and collateral ganglia (anterior to the vertebral ganglia).
