They are called gastric folds.
parietal peritoneum
The folds that form in the gastric mucosa when the stomach is empty are called rugae. These are temporary folds that allow for expansion of the stomach when food is consumed. Rugae help to increase the surface area of the stomach lining for better absorption of nutrients.
Gastric folds are the rugae or wrinkles in the inner lining of the stomach. These folds help the stomach expand to accommodate food and aid in the mechanical digestion process. The folds also contain gastric glands which secrete gastric juices to help break down food.
esophagus Every system that has an outside opening produces mucous. This includes the respiratory, urinary, digestive and urogenital systems. Also the lining of the eye produces mucous. This substance keeps the membranes moist and prevents them from drying out.
The thin epithelial casing that covers the hard palate is called the oral mucosa.
gastric mucosa
Folds in the stomach increase the surface area of the mucosa. So you can have more of secreations available for digestion of food.
Mucosa
These types of folds are called rugae, in the stomach they are the gastric rugae
parietal peritoneum
stomach
The folds that form in the gastric mucosa when the stomach is empty are called rugae. These are temporary folds that allow for expansion of the stomach when food is consumed. Rugae help to increase the surface area of the stomach lining for better absorption of nutrients.
The Stomach
The gastric mucosa is located in the stomach. In humans the gastric mucosa is approximately 1 mm thick with a smooth and soft surface.
Nothing happens- alcohol is not an acid capable of eating through the mucosa. Stomach acid is, but the mucosa is constantly renewed. In some cases, the mucosa is not enough and the acid irritates the stomach lining- thats known as an ulcer.
rugae
Stomach mucosa is what contains hydrochloric acid and several enzymes that break down food in the stomach. Stomach mucosa is also referred to as gastric mucosa.