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The gastrointestinal tract functions as an anaerobic bioreactor.
The organization of the epithelium in the mammalian intestine covers villi, crypts, and different cell types. Peyer’s patches with Lymphoid follicles and immune cells are located in the lamina propria. The mucus layer separates the epithelium from the luminal contents.
The Intestine / Gastrointestinal Tract (Gut / GIT) is an essential physical and immunological barrier composed of a monolayer of specialized epithelial cells. These cells perform a variety of functions, including:
The intestinal barrier is crucial in preventing the translocation of gut microbes into inner compartments of the body.
The digestive tract is complex. It hosts millions of microorganisms. It is the main site for bacterial colonization. This bacterial community affects human health.
Along the Intestine / Gastrointestinal Tract (Gut / GIT), microbial load, mucus thickness, and pH increase from the small intestine to the large intestine
The large gastrointestinal tract is exposed to the outside world and must allow nutrients in. It must also block pathogens and harmful chemicals. The gut senses its environment by using detection systems. These detect chemicals, pathogens, and toxins and sense the contents' properties. Sensory data goes to four systems: the enteroendocrine hormonal signaling system, gut innervation, the immune system, and local tissue defence. Many interactions involve endocrine, neuro, immune, and organ-defense systems.
The Intestine / Gastrointestinal Tract (Gut / GIT) contains the largest surface of the human body exposed to the external environment, extending for roughly 200-300 m^2 due to many villi in the small intestine and crypts in the colon.
Microbiologically, the gut can be thought of in terms of three principal regions: the stomach, small intestine and colon
see also:
Intestinal Epithelial Barrier / Mucosal Barrier / Mucus Layer