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The digestive system consists of a tubular tract extending from the mouth to the anus, responsible for breaking down food into absorbable molecules. Food travels through this passage via a process called peristalsis—waves of muscle contraction and relaxation that propel food along the digestive tract.

Upon ingestion, food is stored in the stomach and subjected to acidic processing before moving into the small intestine, which is the primary site for nutrient absorption. The process continues into the large intestine, where remaining waste is compacted before elimination.

Key Components of the Digestive System

The human digestive system features several key components, including:

• Mouth and Esophagus: Where mechanical digestion begins.