The acid contained in human gastric juice is

When we eat some sour food, we are prone to stomach acid. When the acid starts to flow out of the stomach, we will feel a heartburn and feel very uncomfortable. If there is too much acid in the stomach, we will easily vomit the acid, and the throat will also feel a particularly irritating taste. So what is the acid produced in the human gastric juice?

Gastric juice is acidic, with a normal Ph between 0.8-1.2. If the acidity is too high or too low, it will affect gastric digestion. Gastric digestive enzymes adapt to the acidic environment. The small intestine is an alkaline environment, and pepsin denatures and becomes inactive after entering the small intestine.

Gastric juice is a mixture secreted by various cells of the gastric glands. The gastric glands in the pylorus are composed of mucous cells that secrete alkaline mucus but do not contain digestive enzymes. The fundus and body of the stomach are also known as the acid-secreting gland area, which accounts for 2/3 or 4/5 of the entire stomach. The gastric glands in this area are mainly composed of three types of cells: chief cells, also known as gastric enzyme cells, which can secrete pepsinogen; parietal cells, also known as hydrochloric acid cells, which mainly secrete hydrochloric acid and can also produce "intrinsic factor" - a substance related to vitamin B12 absorption; neck mucous cells, which can secrete mucus. It is possible that the stomach is damaged. It is recommended that you go to the hospital to get some stomach-nourishing medicine, because the previous vomiting caused excessive stomach spasm, so gastric juice was also vomited out. The human stomach has two openings, the one for taking in food is called the cardia, and the one for excreting food is called the pylorus.

Normally, these two openings are closed, just like the bladder and anus, and are closed by the autonomic nervous system controlling the relevant smooth muscles, and are only opened when necessary.

If these two openings are not closed, the stomach will squeeze the food in the stomach as it digests food, and it will be easy for the food to come out. When a person is drunk, the autonomic nervous system that controls the cardia fails, and the opening is opened. When the stomach moves, it is easy to squeeze the food in the stomach out from the cardia, causing vomiting. If the function of the autonomic nervous system is not restored and the cardia cannot be closed, you may still feel like vomiting even after all the food in the stomach has been vomited out. By the way, the pyloric sphincter of the stomach is also open at this time, so sometimes at the end of vomiting, even bile can be vomited out. This is the reason.