"The innervation of these glands is governed by the autonomic nervous system, primarily through the enteric nervous system. The glands secrete an alkaline, mucus-rich fluid in response to vagal nerve stimulation, cholecystokinin, and various hormones such as secretin, gastrin, and prostaglandin 2. Notably, the gland's alkaline secretions protect the mucosa from acidic chyme secretions from the stomach 3-4."
"location: the primary autonomic control originates in the coeliac plexus and superior mesenteric plexuses; terminal fibres reside in the submucosal (Messinger's) plexus within the duodenal wall"