The digestion of proteins begins in the stomach and is completed in the small intestine. The enzymes that act on proteins are known as proteases. Digestion in the stomach:
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Answer:
Explanation:The stomach is a muscular organ located on the left side of the upper abdomen. The stomach receives food from the esophagus. As food reaches the end of the esophagus, it enters the stomach through a muscular valve called the lower esophageal sphincter.
The stomach secretes acid and enzymes that digest food. Ridges of muscle tissue called rugae line the stomach. The stomach muscles contract periodically, churning food to enhance digestion. The pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.
hi mate,
===>>The food is churned by the muscular walls of the stomach and the gastric juices are properly mixed.
===>>The sphincter muscle helps in releasing the partly digested food into the small intestine.
===>>Pepsin is secreted as pepsinogen in stomach and converted into active pepsin by HCl present in gastric juice. HCl and pepsin both could be corrosive on stomach lining: but to prevent that a thick layer of mucus keeps the stomach lining covered all the time.
===>>Stomach juice is secreted regularly during the meal time; hence if one skips a meal chances of damage to the stomach wall goes up. Action of pepsin on gut wall causes ulcer.
===>>Trypsin is secreted as inactive trypsinogen from pancreatic tissue. Once it reaches small intestine, it is converted in active trypsin by enterokinase enzyme.
===>>Trypsin acts in alkaline medium and it is prevented from taking any damaging action on intestinal lining of lumen due to presence of protective mucus layer on it.
i hope it helps you.