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  2. Stomach - Wikipedia

    en.wikipedia.org/wiki/Stomach

    The parietal cells of the human stomach are responsible for producing intrinsic factor, which is necessary for the absorption of vitamin B12. B12 is used in cellular metabolism and is necessary for the production of red blood cells, and the functioning of the nervous system.

  3. Gastric glands - Wikipedia

    en.wikipedia.org/wiki/Gastric_glands

    Foveolar cells (surface mucous cells) are mucus-producing cells which cover the inside of the stomach, protecting it from the corrosive nature of gastric acid. These cells line the gastric mucosa and follows into the gastric pits. Mucous neck cells are located within gastric glands, interspersed between parietal cells.

  4. Parietal cell - Wikipedia

    en.wikipedia.org/wiki/Parietal_cell

    Human parietal cells (pink staining) – stomach. As a result of the cellular export of hydrogen ions, the gastric lumen is maintained as a highly acidic environment. The acidity aids in digestion of food by promoting the unfolding (or denaturing ) of ingested proteins .

  5. Atlas of cells offers a milestone leap in understanding of ...

    www.aol.com/atlas-cells-offers-milestone-leap...

    The gastrointestinal tract atlas, which includes the tissues of the mouth through to the esophagus, stomach, intestines and colon, was created with data from 1.6 million cells and revealed a cell ...

  6. Gastrointestinal tract - Wikipedia

    en.wikipedia.org/wiki/Gastrointestinal_tract

    The human gastrointestinal tract consists of the esophagus, stomach, and intestines, and is divided into the upper and lower gastrointestinal tracts. [3] The GI tract includes all structures between the mouth and the anus , [ 4 ] forming a continuous passageway that includes the main organs of digestion, namely, the stomach , small intestine ...

  7. Human digestive system - Wikipedia

    en.wikipedia.org/wiki/Human_digestive_system

    The parietal cells in the fundus of the stomach, produce a glycoprotein called intrinsic factor which is essential for the absorption of vitamin B12. Vitamin B12 (cobalamin), is carried to, and through the stomach, bound to a glycoprotein secreted by the salivary glands – transcobalamin I also called haptocorrin, which protects the acid ...

  8. Gastric acid - Wikipedia

    en.wikipedia.org/wiki/Gastric_acid

    The secretion is a complex and relatively energetically expensive process. Parietal cells contain an extensive secretory network (called canaliculi) from which the hydrochloric acid is secreted into the lumen of the stomach. The pH of gastric acid is 1.5 to 3.5 in the human stomach lumen, a level maintained by the proton pump H + /K + ATPase. [1]

  9. Gastric mucosa - Wikipedia

    en.wikipedia.org/wiki/Gastric_mucosa

    Several types of endocrine cells are found in the gastric glands. The pyloric glands contain gastrin -producing cells ( G cells ); this hormone stimulates acid production from the parietal cells. Enterochromaffin-like cells (ECLs), found in the oxyntic glands release histamine , which also is a powerful stimulant of the acid secretion.