Anatomy and Physiology II Practice Test 2025 - Free Anatomy Practice Questions and Study Guide.

The cardia is the part of the stomach that serves as the initial section receiving food from the esophagus. This area is located right at the junction of the esophagus and the stomach, where the lower esophageal sphincter relaxes and allows for the entry of food after it has been swallowed. The cardia plays a crucial role in preventing reflux, as it is equipped with muscle fibers that help maintain closure of the esophagus when food is not passing through.

The fundus is the upper curved portion of the stomach but does not have a direct role in the receiving of food. The pylorus is the section of the stomach that connects to the small intestine and is primarily involved in the emptying of stomach contents into the duodenum. The body of the stomach is the main central region where food is mixed and digested but is positioned further away from the immediate entrance of food from the esophagus. Therefore, the cardia is specifically designed to be the first structure that engages with incoming food, facilitating the digestive process right at the entry point.