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Gastrointestinal Physiology
The document summarizes key aspects of digestion and absorption in the gastrointestinal tract. It describes how proteins, carbohydrates, lipids, and nucleic acids are broken down by enzymes in the stomach and small intestine into smaller molecules that can be absorbed. It explains the processes of absorption across the intestinal mucosa, including diffusion, active transport, and entry into the bloodstream and lymph.
