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What is Monogastric Digestion?01:50

What is Monogastric Digestion?

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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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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.
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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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The digestive system is responsible for the ingestion of food, secretion of enzymes, mixing and digesting food, absorption of the nutrients and defecation. The human digestive system consists of two major parts: the gastrointestinal tract and the accessory digestive organs.
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The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
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Digestive activity regulation hinges on three primary components. Activation is prompted by a multitude of mechanical and chemical indicators, primarily detected by receptors within the stomach and intestines' walls. These receptors predominantly respond to factors such as mechanical stretching of the organ walls, changes in pH and osmolarity, and the presence of digesting materials and their by-products.
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Related Experiment Video

Updated: Dec 18, 2025

Adapting Gastrointestinal Organoids for Pathogen Infection and Single Cell Sequencing under Biosafety Level 3 BSL-3 Conditions
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The digestive system and the COVID-19.

Huma Qureshi1

  • 1Gastroenterologist, Doctor's Plaza, Clifton, Karachi, Pakistan.

JPMA. the Journal of the Pakistan Medical Association
|June 10, 2020
PubMed
Summary

Digestive symptoms like indigestion and diarrhea affect nearly half of patients with coronavirus disease (COVID-19). This review explores the link between COVID-19 and gastrointestinal issues during the pandemic.

Area of Science:

  • Gastroenterology
  • Infectious Diseases
  • Public Health

Background:

  • The COVID-19 pandemic, caused by SARS-CoV-2, presents diverse clinical manifestations.
  • Beyond respiratory symptoms, a significant proportion of patients experience digestive issues.

Purpose of the Study:

  • To review the association between COVID-19 and gastrointestinal symptoms.
  • To consolidate current understanding of digestive manifestations in COVID-19 patients.

Main Methods:

  • A literature review was conducted.
  • Searches were performed using Google to identify relevant studies on COVID-19 and digestive symptoms.

Main Results:

  • Approximately 50% of COVID-19 patients report digestive symptoms.
Keywords:
COVID-19, Coronavirus, Diarrhoea, Digestive symptoms.

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  • Reported symptoms include abdominal pain, diarrhea, and indigestion.

    • Conclusions:

    • Digestive symptoms are a common feature of COVID-19.
    • Recognizing these symptoms is crucial for comprehensive patient assessment and management.