As students of neural anatomy, the class attended a lecture about the vagi which involved their normal and abnormal functions.
2. Etymology: from Latin, vagus, "wandering" + nervus, "nerve".
The vagus nerve transmits sensory information back to the brain from major organs in the body; including the ears, the tongue, the pharynx, the larynx, and much of the digestive system.
A complete interruption of the vagus nerve causes a condition in which the voice is hoarse and nasal, and the vocal cord on the affected side is immobile; resulting in difficulty in swallowing (dysphagia) and speaking (dysphonia).
The vagus nerve also stimulates the production of stomach acid and pancreatic juice; stimulates the activity of the gallbladder, and increases the rhythmic muscular contractions that move food through the digestive tract.