Final answer:
Postganglionic fibers in the thoracic cavity travel to target effectors throughout the body as part of the sympathetic division of the autonomic nervous system.
Step-by-step explanation:
In the thoracic cavity, the postganglionic fibers of the autonomic nervous system can travel to various target effectors throughout the body.
These fibers are part of the sympathetic division of the autonomic nervous system, which influences organ systems.
Neurons from the lateral horn of the spinal cord project to the chain ganglia on either side of the vertebral column or to collateral ganglia in the abdominal cavity.
From these ganglionic neurons, the postganglionic fibers then project to target effectors throughout the body.