Listen to Dr. Tom Roselle, DC discuss the vagus nerve. The vagus nerve is historically cited as the pneumogastric nerve, is the tenth cranial nerve, and interfaces with parasympathetic control of the heart, lungs, and digestive tract.
The vagus nerve is the longest cranial nerve. It contains motor and sensory fibers and, because it passes through the neck and thorax to the abdomen, has the widest distribution in the body.
Also discussed, the parasympathetic system. The parasympathetic system is responsible for stimulation of “rest-and-digest” or “feed and breed” activities that occur when the body is at rest, especially after eating, including sexual arousal, salivation, lacrimation (tears), urination, digestion, and defecation.