Parietal cell

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Parietal Cell

Parietal cells, also known as oxyntic cells, are the epithelial cells that secrete hydrochloric acid (HCl) and intrinsic factor. These cells are located in the gastric glands found in the lining of the stomach.

Pronunciation

Parietal cell: /pəˈraɪɪtəl sɛl/

Etymology

The term "parietal" comes from the Latin word "paries" which means "wall". This is in reference to these cells being part of the wall of the stomach. The term "cell" comes from the Latin "cella" meaning "small room".

Function

Parietal cells have two very important functions. Firstly, they produce hydrochloric acid, which is crucial for the digestion of food. Secondly, they produce a glycoprotein called intrinsic factor, which is necessary for the absorption of vitamin B12 in the small intestine.

Related Terms

  • Gastric glands: The glands in the stomach lining that contain parietal cells.
  • Hydrochloric acid: A strong acid produced by the parietal cells in the stomach. It helps break down food during digestion.
  • Intrinsic factor: A glycoprotein produced by the parietal cells. It is necessary for the absorption of vitamin B12.
  • Vitamin B12: A vitamin that is necessary for the normal functioning of the brain and nervous system. It is absorbed in the small intestine with the help of intrinsic factor.

See Also

External links

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