The somatic system uses one neuron. But every autonomic signal runs through two neurons. They meet at a relay stop called a ganglion. The two divisions wire this in different ways. Switch between them.
Sympathetic
CNS on the left · target organ on the right
Autonomic wiringtwo neurons, one relay stop
📷 Reference image
A real labeled figure. Compare it with the interactive above.
Autonomic Pathways — OpenStax, CC BY 3.0 (via Wikimedia Commons)
