These long reflex arcs primarily act to coordinate and regulate the activity of different sections of the GI tract. The PNS long reflex arcs are mainly involved in preparing sections for activity as they are mainly stimulatory. An example of this would be that the mastication of food stimulates salivary secretion but also secretion of gastric juice, pancreatic juice and bile. | These long reflex arcs primarily act to coordinate and regulate the activity of different sections of the GI tract. The PNS long reflex arcs are mainly involved in preparing sections for activity as they are mainly stimulatory. An example of this would be that the mastication of food stimulates salivary secretion but also secretion of gastric juice, pancreatic juice and bile. |