The term "wandering nerve" refers to the tenth cranial nerve, which stretches from the brainstem to various organs in the body, including the heart, lungs, and digestive tract. This nerve is also known as the vagus nerve, a Latin term meaning "wandering" due to its extensive and complex network of connections throughout the body. Synonyms for the wandering nerve include the vagal nerve, pneumogastric nerve, and cranial nerve X. The vagus nerve plays a crucial role in regulating bodily functions, including heart rate, digestion, and respiratory function, and disruptions to its function can lead to a range of health issues.