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Overview of the Digestive System: Key Sections and Functions

The human digestive system is divided into three main sections: the oral cavity, the digestive tube, and the digestive glands. The oral cavity, including the mouth and tongue, is lined with stratified squamous epithelium, with keratinized areas on the gums, dorsal tongue, and hard palate. The digestive tube encompasses the esophagus, stomach, small intestine, and large intestine, which play vital roles in food processing and nutrient absorption. The pancreas and liver, as digestive glands, produce essential enzymes and bile for digestion.

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Overview of the Digestive System: Key Sections and Functions

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