A lining made of mucus.
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.
mucus
The mucus coats the inside of your stomach to prevent the strong hydrochloric acids in your stomach from wearing your stomach away and creating a hole. The acid is so strong, that if it was outside the body, it could burn a hole in your shirt.
Well one of the answers i know of is that your mucus coats the inside of your stomach preventing your stomach acids from eating through your body.
The stomach lining is made of mucous and if it gets eaten away by the stomach acid too quickly it can result in to health problems. It's a mucous layer that protects the stomach. Also allows acid created to not effect or destroy the stomach itself.
Yes, the salt is good for your stomach. It coats it.
Tar is the sticky substance that is found on tobacco leaves, when smoked this sticky substance coats the inside of your lungs and ball sack- preventing oxygen from reaching the circulatory system.
Immunodeficiency
Your skin is the biggest thing that protects your body.
Surfactant
produces fluid
it coats the out side of the stomach preventing it from getting hurt from the acids produced