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gastrointestinal tract
Introduction References & Edit History
Images & Videos
Diagram of the human digestive system viewed from the front, showing and labeling organs including the mouth, teeth, tongue, salivary glands, pharynx, esophagus, liver, stomach, gallbladder, pancreas, large intestine, small intestine, appendix, rectum, and anus. Diagram comparing the digestive tracts of a cow and a chicken, highlighting the cow's four stomach chambers (rumen, reticulum, omasum, abomasum) and the chicken's three stomach chambers (crop, proventriculus, gizzard), with labeled esophagus and small intestine in each animal.
Investigate an experiment demonstrating the advantages of microbiota transplantation therapy in treating Clostridium difficile infection
Causes of morning sickness explained
Quizzes
Male muscle, man flexing arm, bicep curl.
Facts You Should Know: The Human Body Quiz
3d illustration human heart. Adult Anatomy Aorta Black Blood Vessel Cardiovascular System Coronary Artery Coronary Sinus Front View Glowing Human Artery Human Heart Human Internal Organ Medical X-ray Myocardium
Human Organs
Superficial arteries and veins of face and scalp, cardiovascular system, human anatomy, (Netter replacement project - SSC)
The Human Body
Muscles of facial expression, human anatomy, (Netter replacement project - SSC). Human face, human head.
Characteristics of the Human Body

gastrointestinal tract: References & Edit History

Article Contributors

Primary Contributors

  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

Other Encyclopedia Britannica Contributors

Article History

Type Description Contributor Date
Modified link of Web site: Biology LibreTexts - The Human Gastrointestinal Tract. Apr 08, 2026
Add new Web site: OpenStax - Fundamentals of Nursing - Gastrointestinal Tract Structures and Functions. Feb 12, 2026
Add new Web site: BMC - Journal of Biological Engineering - Tissue engineering of the gastrointestinal tract: the historic path to translation. Jul 09, 2025
Add new Web site: TeachMeAnatomy - The Gastrointestinal Tract. Jun 24, 2024
Add new Web site: Biology LibreTexts - The Human Gastrointestinal Tract. Feb 20, 2024
Add new Web site: Khan Academy - Meet the gastrointestinal tract! Aug 06, 2023
Add new Web site: Biology LibreTexts - The Human Gastrointestinal Tract. Oct 21, 2022
Add new Web site: National Center for Biotechnology Information - Microbiology of the Gastrointestinal Tract. Aug 29, 2022
Changed article title from "alimentary canal" to "gastrointestinal tract." Apr 10, 2019
New illustration added. Jan 15, 2009
Article revised. Nov 26, 2003
Article added to new online database. Jul 20, 1998
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