Final answer:
Postganglionic fibers are the axons that extend from the autonomic ganglion to the effector organs. They represent the output of a ganglion that directly influences the organ.
Step-by-step explanation:
The axons that extend from the autonomic ganglion to the effector organs are called postganglionic fibers. These fibers represent the output of a ganglion that directly influences the organ. They are longer than the preganglionic fibers because they have to travel a greater distance from the ganglion to the target effector. Postganglionic fibers are unmyelinated.