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Related Concept Videos

Anatomy of the Gastrointestinal System01:26

Anatomy of the Gastrointestinal System

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The human digestive system is an intricate and essential network for nutrient absorption and waste elimination. It encompasses the gastrointestinal (GI) tract and several accessory organs.
Here's a detailed walkthrough of this complex system:
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Histology of the Gastrointestinal (GI) Tract01:20

Histology of the Gastrointestinal (GI) Tract

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The GI tract, from beginning to end, is made up of four continuous tissue layers that adjust their structure according to their specific roles. These layers, from innermost to outermost, are known as the mucosa, submucosa, muscularis, and serosa, which are continuous with the mesentery.
The mucosa is sometimes called a mucous membrane due to its mucus-secreting features. This membrane is composed of epithelium, which directly interacts with ingested substances, and the lamina propria, a layer...
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Gastrointestinal Motility Disorders01:20

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Gastrointestinal or GI motility disorders are characterized by irregular gastrointestinal tract movements, disrupting food transit from the mouth to the anus. They are caused by damage or dysfunction in gut muscles or nerves. These disorders can cause symptoms such as severe constipation, diarrhea, abdominal pain, and swallowing difficulties. Disorders can affect any segment of the GI tract and range widely in severity, from common conditions like GERD to life-threatening conditions like...
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Physiology of the Gastrointestinal System I: Ingestion and Propulsion01:22

Physiology of the Gastrointestinal System I: Ingestion and Propulsion

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The physiology of the gastrointestinal system begins with ingestion as food enters the mouth.
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Physiology of the Gastrointestinal System II: Digestion and Absorption01:22

Physiology of the Gastrointestinal System II: Digestion and Absorption

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The gastrointestinal (GI) tract, extending from the mouth to the anus, plays a pivotal role in the digestion and absorption of nutrients. This process involves both mechanical and chemical actions facilitated by various enzymes.
Digestion begins in the mouth, where food undergoes mechanical breakdown by chewing and combines with saliva. Salivary amylase, an enzyme in saliva, starts the breakdown of starches into maltose. The food then travels down the esophagus to the stomach.
In the stomach, a...
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Physiology of the Gastrointestinal System III: Elimination01:26

Physiology of the Gastrointestinal System III: Elimination

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The gastrointestinal elimination process involves a complex interplay of neural and hormonal mechanisms that coordinate the final waste removal from the body. This intricate operation encompasses the absorption of water and electrolytes, vital for transforming the remaining indigestible food matter into feces. The large intestine is pivotal in water and electrolyte absorption, forming feces from unabsorbed minerals, undigested food, bacteria, bile pigments, and shed epithelial cells. Essential...
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Updated: Jan 22, 2026

Ex Vivo Intestinal Sacs to Assess Mucosal Permeability in Models of Gastrointestinal Disease
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Ex Vivo Intestinal Sacs to Assess Mucosal Permeability in Models of Gastrointestinal Disease

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[Microbiome And Gastrointestinal Diseases].

Julian Siegel, Viola Andresen, Peter Layer

    Deutsche Medizinische Wochenschrift (1946)
    |July 17, 2019
    PubMed
    Summary
    This summary is machine-generated.

    The human microbiome, particularly in the gut, is crucial for health and disease. Research highlights its role in gastrointestinal diseases and explores innovative microbiome-based therapies.

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    Area of Science:

    • Microbiome research
    • Gastrointestinal health
    • Host-microbiome interactions

    Background:

    • The human microbiome's complex interactions with the host are increasingly linked to various diseases.
    • The intestinal microbiome plays a critical role in the development of gastrointestinal disorders.
    • Specific microbial alterations are associated with conditions like inflammatory bowel disease, gastric carcinoma, and esophageal issues.

    Purpose of the Study:

    • To emphasize the significance of the microbiome in gastrointestinal diseases.
    • To present current and emerging therapeutic strategies targeting the microbiome.
    • To explore the implications of understanding microbial communities for future treatments.

    Main Methods:

    • Review of current literature on microbiome research in gastrointestinal diseases.
    • Analysis of the role of specific microorganisms (e.g., Helicobacter pylori) and microbial communities in disease pathogenesis.
    • Discussion of therapeutic interventions, including fecal microbiome transfer.

    Main Results:

    • Microbiome dysbiosis is implicated in inflammatory bowel disease, gastric cancer, and esophageal conditions.
    • Oral microbiome health is linked to protection against pancreatic cancer.
    • Fecal microbiome transfer is gaining recognition in clinical guidelines.

    Conclusions:

    • Understanding the intestinal microbiome offers promising avenues for novel therapeutic approaches.
    • The complexity of the microbiome necessitates continued research for comprehensive understanding and treatment development.
    • Targeting the microbiome represents a frontier in managing and potentially curing gastrointestinal diseases.