Cephalopod foot ganglion

The foot ganglion is on the ventral surface of the esophagus behind the brain. There are nerve cords connected to the brain. The nerves are sent from the foot ganglion to the wrist and funnel. Therefore, the innervation also shows that the wrist and funnel are homologous to the feet and visceral ganglia of other mollusks. Healed with the lateral nerve, located behind the esophagus ventrofacial foot ganglia. 

The lateral visceral ganglia send out three pairs of nerves: one pair forms sympathetic nerves (sympathetic nerves) to the viscera, and forms gastric ganglia (gastric ganglia) between the stomach and the sac to control the movement of the stomach and the sac; one pair is to The nerves of the gills form the branchial ganglia at the base of the gills; there are also a pair of nerves to the mantle membranes on both sides of the front of the trunk to form huge stellate ganglia to control the contraction of the mantle muscles. 

The stellar ganglion contains huge nerve fibers (giant fibers), which are nerve fibers that are emitted by the giant nerve cells in the lateral visceral ganglion, and pass through the mantle membrane to reach the stellar ganglion. Send out huge nerve fibers to reach the muscles of the mantle.