The upper gastrointestinal system includes the structures from the mouth to the stomach.The lower gastrointestinal system includes the small and large intestines.

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Quizplus · Accepted Answer

This is a true statement. The upper gastrointestinal system includes the structures involved in food ingestion, chewing, and swallowing (such as the mouth, pharynx, esophagus) and the organs involved in the initial stages of digestion (such as the stomach). The lower gastrointestinal system includes the small and large intestines which are responsible for further digestion, absorption, and elimination of waste.

The Upper Gastrointestinal System Includes the Structures from the Mouth