GENERAL HISTOLOGY

Detailed explanation-1: -The vagus nerve innervates the crural area of the diaphragm (where the esophagus passes or esophageal hiatus). The tenth cranial nerve innervates the suspensory muscle of the duodenum or musculus suspensorius duodeni.

Detailed explanation-2: -The vagus nerve is the tenth cranial nerve (CN X) and is the longest mixed cranial nerve. Although we refer to the vagus nerve as singular, it’s actually a pair of nerves that emerge from the left and right side of the medulla oblongata portion of the brain stem.

Detailed explanation-3: -Stomach. The vagus nerve tells the stomach to churn the food within it, as well as to produce stomach acid that’s necessary for digesting that food and a number of other things. That’s why a damaged or under-active vagus nerve often results in low stomach acid levels and low enzyme production.