The nasogastric tube will be inserted through the nose, travel through the pharynx and will ultimately end in the stomach. After passing through the pharynx, what long muscular passageway will the NG tube pass through to get to the stomach?

esophagus

Explanation:

Nasogastric tube is used for the purpose of carrying food and medicine from the nose to the stomach. The nasogastric tube passes through the pharynx, to the oesophagus and finally reaches into the stomach. The tube is inserted into the nasal cavity of the patient from where it passes down to the pharynx. After passing the pharynx the tube reaches the esophagus which is a muscular passageway through which the tube gets inserted into the stomach. Once the tube reaches the stomach it is secured into its place.