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Your stomach, if you want to be technical about it, is a "crescent-shaped hollow organ" about the size of a large melon. The average adult stomach holds about three quarts (three liters) of fluid. Your stomach is made up of a variety of layers, including: * The serosa - the outer layer that acts as a covering for the other layers. * Two muscle layers - the middle layers that propel food from the stomach into the small intestine. * The mucosa- the inner layer made up of specialized Cells including parietal cells, g-cells and epithelial cells. Parietal cells produce hydrochloric acid, a strong acid that helps to break down food. The acid in your stomach is so concentrated that if you were to place a drop on a piece of wood, it would eat right through it. The g-cells produce gastrin, a hormone that facilitates the production of hydrochloric acid by the parietal cells. The stomach is protected by the epithelial cells, which produce and secrete a bicarbonate-rich solution that coats the mucosa. Bicarbonate is alkaline, a base, and neutralizes the acid secreted by the parietal cells, producing water in the process. This continuous supply of bicarbonate is the main way that your stomach protects itself from autodigestion (the stomach digesting itself) and the overall acidic environment. In some individuals, due to impairments in blood supply to the stomach, or to overproduction of acid, this defense system does not work as well as it should. These people can get gastric ulcers. There are also specific bacteria, called Helicobacter pylori, that may cause impairment of the stomach's defenses and can also be responsible for ulcers.

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15y ago
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11y ago

A layer of mucous produced by cells in the stomach.

It is also called Muces.

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12y ago

It is mostly protected by a thick later of mucus.

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9y ago

It is protected, like many other organs in the abdomen, by the muscles and skin over it.

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12y ago

Sodium bicarbonate which is produced in the pancreas.

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13y ago

There is mucus in the stomach that protects the acids from burning

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12y ago

The stomach has a layer of mucus lining it to protect itself from the high acidity of HCl.

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14y ago

mucous

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Q: How is the stomach protected from hydrochloric acid?
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