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Related Concept Videos

Other Disorders of Digestive System01:30

Other Disorders of Digestive System

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The gastrointestinal tract is susceptible to various disorders. If the lower esophageal sphincter is damaged, stomach acid can flow back into the esophagus, causing irritation and inflammation of the lining. This condition is called gastroesophageal reflux disease (known as heartburn) and may cause chest pain and difficulty swallowing. In the stomach, prolonged use of nonsteroidal anti-inflammatory drugs like aspirin, chronic alcohol consumption, bacterial infections such as Helicobacter...
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Intestinal Phase of Digestion01:29

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The intestinal phase of digestion is the third and final stage of the digestive process, occurring after the cephalic and gastric phases. It begins when chyme, a partially digested mixture of food and digestive enzymes, enters the small intestine from the stomach. This phase is crucial for nutrient absorption and involves complex hormonal and enzymatic interactions.
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...
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Digestive Functions of the Large Intestine01:20

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The large intestine is where the final stages of digestion happen. When the cecum receives chyme, it contains undigested carbohydrates that undergo fermentation. Gut bacteria ferment these carbohydrates to produce short-chain fatty acids that provide some energy and help synthesize essential vitamins.
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The small intestine plays a crucial role in our digestive system, performing both mechanical and chemical digestion.
Mechanical digestion in the small intestine involves movements such as segmentations and migrating motility complexes (MMCs), primarily controlled by the myenteric plexus. Segmentations are localized contractions occurring in areas of the intestine distended by chyme—a mixture of partially digested food. These contractions mix chyme with digestive juices, facilitating...
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Carbohydrate Digestion00:57

Carbohydrate Digestion

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Carbohydrate digestion and metabolism break down simple and complex carbohydrates from food into saccharides (i.e., sugars) for the body to use as energy. Carbohydrate digestion starts in the mouth during mastication, or chewing. The masticated carbohydrates remain intact in the stomach. Digestion resumes in the duodenum of the small intestine, where pancreatic alpha-amylase and brush border enzymes of the microvilli convert complex carbohydrates to monosaccharides. Finally, the monosaccharides...
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What is Monogastric Digestion?01:50

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The human body contains a monogastric digestive system. In a monogastric digestive system, the stomach only contains one chamber in which it digests food. Several other animal species also have monogastric digestive systems, including pigs, horses, dogs, and birds. This chapter, however, focuses on the human digestive system.
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Updated: Jan 31, 2026

An Intestinal Gut Organ Culture System for Analyzing Host-Microbiota Interactions
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Digestive disorders and Intestinal microbiota.

Antonio Nouvenne1, Andrea Ticinesi, Claudio Tana

  • 1Dipartimento Medico-Geriatrico-Riabilitativo, Azienda Ospedaliero-Universitaria di Parma. anouvenne@ao.pr.it.

Acta Bio-Medica : Atenei Parmensis
|December 19, 2018
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Summary
This summary is machine-generated.

Alterations in gut microbiota, known as dysbiosis, are linked to gastrointestinal diseases like IBS and IBD. This overview explores the gut microbiota-disease connection and its clinical applications.

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Area of Science:

  • Gastroenterology and Microbiology
  • Focuses on the gut microbiome's role in digestive health.

Background:

  • Growing evidence links gut microbiota alterations to gastrointestinal diseases.
  • Dysbiosis, characterized by reduced diversity and altered composition, is a key factor.
  • Diseases implicated include irritable bowel syndrome, inflammatory bowel disease, celiac disease, GI cancer, and C. difficile infection.

Purpose of the Study:

  • To provide a concise overview of the relationship between intestinal microbiota and gastrointestinal diseases.
  • To highlight the translation of these scientific concepts into clinical practice.

Main Methods:

  • Literature review and synthesis.
  • Focus on key concepts and clinical relevance.

Main Results:

  • Significant scientific literature supports the association between gut dysbiosis and various GI disorders.
  • Dysbiosis is a common feature across a spectrum of gastrointestinal conditions.

Conclusions:

  • Understanding the gut microbiota is crucial for diagnosing and managing GI diseases.
  • Translating research on gut microbiota into clinical practice holds promise for improved patient outcomes.