Stomach - the "processing plant" of food. The stomach is like a cloth bag and is located in the upper left abdominal cavity of people. It is the most dilated part of the digestive tract, connecting the cardiac esophagus above and the pylorus and duodenum below. There are many rugged mucous membranes on the inner surface of the stomach, which look like hills and valleys. When filled with food, the mucosa can expand, allowing a larger contact area between the food and the stomach.
Why is the stomach said to be a food processing plant?
People often say that the stomach is the storage and processing plant for food, and is the main organ for food digestion. This is because the stomach can secrete a large amount of highly acidic gastric juice (PH value 0.9 to 1.5). Its main component is pepsin, which can break down proteins, promote protein digestion, and protect the gastric mucosa from being digested by itself. Normal adults secrete about 1.5 to 2.5 liters of gastric juice every day. The food that has been roughly processed in the mouth enters the stomach. After being stirred and mixed by gastric peristalsis, coupled with the action of a large number of enzymes in the digestive juice in the stomach, the food finally turns into a porridge-like mixture, which is conducive to intestinal digestion and absorption. Therefore, the stomach is the food processing plant and the final station for digestion and absorption of food.
What can the human stomach digest?
What can the human stomach digest? It still baffles physiologists. Because some people can eat anything. Metroparitan Hospital in New York admitted a patient who claimed to have a "heavy stomach." After surgery, 300 coins, 40 nail clippers, and more than 100 screws and nuts were removed from his stomach.
Swiss Camus is an "expert" at swallowing hard objects. As a circus performer, he likes to swallow razors. He has swallowed more than 50,000 hard steel objects as if nothing had happened. An X-ray of his stomach revealed a dagger inside.
The delicacy of Sarinja Mayik in New Delhi, India is 1 brick per meal. You don't have to worry about him, he is a doctor himself.
British Walter Cornelius's delicious meal is weed, and he never forgets to use a knife and spoon when eating. He is really a bit of a gentleman.
Malayi is also a British man. He is a "smoker addict", but he eats instead of smoking. "Cigarette sandwiches" were his favorite food, but most people would die if they ate them.
Americans often engage in eating competitions. In a California tuna eating competition, Leonard swallowed 501 fish in 4 hours and won the championship. The most amazing one is American Leith, whose hobby is eating light bulbs. Because the light bulbs were eaten, his family often had to live by lighting candles.
How do gastric ulcers develop?
Did you know that there is a harmful liquid hidden in your stomach that no airport security officer can confiscate? Stomach cells secrete hydrochloric acid: a corrosive chemical commonly used in industry to scrub metal. But the mucous membrane lining the stomach wall keeps this "venom" safe in the digestive system and relies on it to digest food. Since the stomach can digest food, why can't our own stomach be digested? It turns out that our stomach often secretes a large amount of mucus, which can protect the stomach wall from being corroded by gastric acid. If for some reason there is too little mucus secretion, or too much gastric juice is secreted, then the stomach itself will be attacked by gastric acid and begin to "digest" the stomach itself. This is how stomach ulcers form.