Final answer:
The erosion of the protective layer of the stomach or duodenum due to overactivity of digestive juices is known as an ulcer. Ulcers are open wounds caused by bacteria when the mucus lining is ruptured and fails to reform. Preventing ulcers involves avoiding foods that irritate the stomach.
Step-by-step explanation:
The erosion of the protective layer of the stomach or duodenum resulting from overactivity of digestive juices is known as an ulcer. Ulcers are open wounds formed when the mucus lining of the stomach or duodenum ruptures and fails to reform. They are often caused by bacteria called Helicobacter pylori. To prevent ulcers, it is important to avoid ingesting items that cause degradation of the mucus lining, such as foods that irritate the stomach.
Learn more about Ulcers