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What protects the stomach's lining from hydrochloric acid?

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Stomach acid is very strong and can burn through wood. I was wondering if you ate an entire eggplant whole how long would it take your stomach acid to dissolve.

The chemical digestion of proteins happens due to acidic digestive fluids that are secreted by the gastric glands, called gastric juices. Secretions of gastric juices are regulated by both neural and hormonal factors. The sight, smell and physical presence of food stimulates the parasympathetic nervous system to increase secretions. In addition, gastrin is a hormone secreted by glands in the mucous membrane of the stomach that stimulates the production of gastric juices. Once the inactive pepsinogen is secreted by the chief cells, it’s inside the stomach.

157 23.4 The Stomach

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Some cells in the stomach lining produce protective mucus, and when they are damaged, less mucus is produced, leaving the stomach inadequately protected against digestive acids. Exposure to digestive acids causes more inflammation and irritation, potentially resulting in erosion of the stomach lining and, ultimately, ulcers. In addition to treating or removing the underlying cause of the inflammation, medication is used to neutralize the stomach acid and reduce the amount of acid produced to help the stomach heal. If for some reason the mucus layer is breached, the epithelial cells are exposed to concentrated stomach acid and the digestive enzymes contained within the gastric juices.

And it needs to be converted to its active form, pepsin, before it can work to break down the proteins in your stomach. To do this, we need hydrochloric acid (HCl), which is a very strong acid. The presence of hydrochloric acid creates an acidic environment in your stomach that is needed to convert pepsinogen to pepsin. Hydrochloric acid is produced right in your stomach, and the gastric glands contain specialized epithelial cells called parietal cells that produce hydrochloric acid.

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The muscularis propria (or muscularis externa) is the next layer that covers the submucosa. It is the main muscle of the stomach and is made up of 3 layers of muscle.

Water – Water doesn’t affect the pH of the stomach, but it does serve to provide enough liquidity that food, enzymes, and acids can readily mix together. Some enzymes require water in order to function. After food has been churned in the stomach and mixed with the gastric juices, it becomes chyme. Chyme is a semifluid mass of partially digested food about the consistency of a heavy cream. It might help you to think of the mechanical and chemical digestion that takes place in your stomach as the process that takes place when you’re preparing a cake mix.

Although stomach acid doesn’t cause an ulcer, it may make it more painful. Stomach acid is a helpful substance but is potentially harmful as well. Fortunately, our body has ways to protect us from any harmful effects. The lining of the stomach is coated with mucus, which prevents the acid from reaching the lining and damaging it. In addition, when the mixture of food and acid leaves the stomach and enters the small intestine, it’s neutralized by the basic environment of the intestine.

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In severe cases, acid production stops and the condition is called achlorhydria. Some people take simple antacids to neutralize the acidity in their stomach. These aren’t as effective as the more modern drugs because they don’t prevent the acid from being made.

the stomach lining is protected from the stomach acid by

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