Final answer:
There are typically 23 sympathetic trunk ganglia on each side of the sympathetic chain.
Step-by-step explanation:
The sympathetic division of the autonomic nervous system consists of a chain of ganglia called sympathetic chain ganglia that run alongside the vertebral column. On each side of the sympathetic chain, there are typically 23 ganglia, with three in the cervical region, 12 in the thoracic region, four in the lumbar region, and four in the sacral region. These ganglia are connected by axonal bridges and play a role in regulating the sympathetic aspect of homeostatic mechanisms.