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The inner lining of the stomach contains wrinkles known as gastric folds. These gastric folds allow the stomach to stretch to accommodate large amounts of food. There are also mucous cells and gastric pits in the inner lining that mucous to protect the stomach.
The folds of the stomach are called rugae.
Rugae
Jack Dombrowski makes mucus in the stomach
The folds of the stomach are called rugae. These folds are expandable, allowing the stomach to enlarge when filled with food and drink. When the stomach empties again, the rugae will fold, decreasing the volume of the stomach back to its original size.
Mucus protects stomach lining from gastric acids.
These types of folds are called rugae, in the stomach they are the gastric rugae
The stomach is protected from acid by mucus, a slippery substance. The mucus covers the inside of the whole stomach. If there is a patch of mucus that is not there then it will cause a lot of pain from the acid.
The stomach wall is protected by mucus. The mucus regenerates about every 2 weeks or so.
The mucus lining in the stomach is actually a protection barrier between the stomach and it's own acids. A new layer of mucus is created bi-weekly so that the acids in the stomach don't burn through the stomach and eventually the entire body.
Folds in the stomach increase the surface area of the mucosa. So you can have more of secreations available for digestion of food.
Gastric folds are found in the interior of the stomach. They are also know as gastric rugae.The main importance of gastric folds is to increase the stomach's surface area and allow it to expand.