What protects the stomach from very strong acid in stomach?

The stomach is protected from its own strong acid by a thick layer of mucus that lines the stomach wall. This mucus layer is constantly being produced by glands in the stomach, and it helps to protect the stomach lining from damage by the acid. In addition, the stomach also produces a substance called bicarbonate that helps to neutralise the acid.

Here are some additional details about how the stomach protects itself from acid:

* The mucus layer is made up of several different components, including water, proteins, and lipids. These components work together to create a barrier that is resistant to acid.

* The mucus layer is constantly being replaced, so that even if some of it is damaged by acid, it can be quickly repaired.

* The stomach also produces a substance called prostaglandin, which helps to maintain the integrity of the mucus layer.

* The stomach also has a number of specialised cells that help to protect it from acid. These cells include parietal cells, which produce hydrochloric acid, and chief cells, which produce pepsin. These cells are located in the gastric pits, which are small depressions in the stomach lining.

Thanks to these protective mechanisms, the stomach is able to withstand the strong acid that it produces in order to digest food.