due to a layer of mucus inside it all around its walls, although there are a few diseases in which the layer of mucus is damaged which does cause erosion of the small intestines.
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NO
No, the small intestine does not contain hydrochloric acid. Hydrochloric acid is produced by the stomach to help break down food. The small intestine primarily contains enzymes and bile to further digest food and absorb nutrients.
gastric acid
There is a coating that protects the small intestine from the acid used for digesting food.
no
No, bile does not neutralize stomach acid. Bile is produced by the liver and stored in the gallbladder, where it helps to emulsify fats in the small intestine. Stomach acid is mainly neutralized by bicarbonate secreted by the pancreas in the small intestine.
When acid leaves the stomach, it enters the small intestine where it is neutralized by bicarbonate secreted by the pancreas. This helps to prevent damage to the lining of the intestine. The remaining acid is further neutralized in the small intestine by alkaline secretions.
The intestine is slightly basic (alkaline). This is important for maintaining the appropriate pH environment to support the function of enzymes and to prevent damage to the lining of the intestine.
the stomach