Answer:
The correct answer is the stomach.
Explanation:
The thick walled organ located between the esophagus and the duodenum of the small intestine is the stomach. It lies on the left side of the abdomen. The fundus is the upper part of the stomach which is inferior to the diaphragm. The fundus is the upper body and below it is the main part of the stomach.
The fundus has an important function as it stores both gases that are formed during chemical digestion and undigested food. Food may rest in the fundus for a while before being mixed with the chyme.
Thus, the correct answer is the stomach.
