Gastric pits
Gastric pits (pronunciation: /ˈɡæstrɪk pɪts/) are the small indentations in the Gastric mucosa, which denote the entry to the Gastric glands. They are found in the lining of the Stomach and are involved in the secretion of Gastric juice, an acidic fluid that aids in the process of Digestion.
Etymology
The term "Gastric pits" is derived from the Greek word "gaster" meaning stomach, and the Old English word "pytt" meaning pit or hole.
Structure
Gastric pits are composed of two main types of cells: Parietal cells and Chief cells. Parietal cells, also known as oxyntic cells, are responsible for the secretion of hydrochloric acid (HCl). Chief cells, on the other hand, produce Pepsinogen, a precursor to the enzyme Pepsin which is necessary for protein digestion.
Function
The primary function of the gastric pits is to produce gastric juice. This fluid contains hydrochloric acid and digestive enzymes, which help break down food in the stomach. The gastric pits also play a role in protecting the stomach lining from the corrosive effects of the acid.
Related Terms
- Gastric mucosa
- Gastric glands
- Stomach
- Digestion
- Parietal cells
- Chief cells
- Hydrochloric acid
- Pepsinogen
- Pepsin
External links
- Medical encyclopedia article on Gastric pits
- Wikipedia's article - Gastric pits
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