Dictionary > Gastric chief cell

Gastric chief cell

Definition
noun, plural: gastric chief cells
An epithelial cell that is found mainly in the mucosal layer of the stomach lining and secretes pepsinogen and gastric lipase, as well as chymosin
Supplement
The gastric glands are the glands located in the stomach lining and are responsible for the secretion of the major components of the gastric juice. There are different cell types that make up the gastric glands. The different cell types are: (1) parietal cells, (2) gastric chief cells, (3) foveolar cells, particularly the mucous neck cells, (4) G cells, and (5) enterochromaffin-like cells.
The gastric chief cells are epithelial cells in the gastric glands in the stomach lining. They are responsible for the secretion of pepsinogen and gastric lipase.
In humans, the gastric chief cells are stimulated by the acidic condition of the stomach as well as through the cholinergic activity from the vagus nerve. When stimulated, it releases pepsinogen, which is a zymogen that is converted to pepsin (a digestive enzyme) through the action of hydrochloric acid produced by the parietal cells. The gastric lipase that these chief cells secrete helps digest triglycerides, converting them into simple fatty acids, diglycerides and monoglycerides.
The gastric chief cells are also the ones that produce chymosin in ruminants, pigs, cats, and seals. The chymosin is a protease produced by the gastric chief cells in the lining of the abomasum of newborns or young ruminants and certain non-ruminant animals. It curdles the milk and helps improve better absorption of the milk they ingest.
The gastric chief cells are regularly replaced. They are the mucous neck cells in the isthmus that migrate toward the base and transdifferentiate into gastric chief cells.
Synonym(s):

  • peptic cell
  • gastric zymogenic cell

See also:

  • gastric gland
  • parietal cell
  • stomach


  • You will also like...

    Carbohydrates, fats and proteins - dietary sources
    A Balanced Diet – Carbohydrates and Fat

    Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an ove..

    Thermographic image of face and neck
    Regulation of Organic Metabolism, Growth and Energy Balance

    The human body is capable of regulating growth and energy balance through various feedback mechanisms. Get to know the e..

    Disturbance on a still water
    Abiotic Factors – Water Conditions

    A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..

    Regulation of Biological Systems
    Regulation of Biological Systems

    Regulation of Biological Systems tutorials are focused on the modulation of biological systems from cell to population l..

    Types and Causes of Brain Damage
    Types and Causes of Brain Damage

    This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..

    Psychiatry and mental disorders
    Psychiatry & Mental Disorders

    Different mental disorders are described here. Read this tutorial to get an overview of schizophrenia, affective mood di..

    Related Articles...

    No related articles found

    See all Related Topics