Final answer:
The superior mesenteric ganglion is associated with the sympathetic and digestive systems. It controls various functions of the digestive system.
Step-by-step explanation:
The superior mesenteric ganglion is associated with the sympathetic system and the digestive system. It is one of the collateral ganglia of the sympathetic system, which are situated anterior to the vertebral column and receive inputs from splanchnic nerves as well as central sympathetic neurons.
It plays a role in controlling organs in the abdominal cavity and is considered part of the enteric nervous system. The superior mesenteric ganglion, along with the celiac ganglion and the inferior mesenteric ganglion, control various functions of the digestive system.