Reference Terms
from Wikipedia, the free encyclopedia
Stomach
The stomach is a muscular, J-shaped organ located in the upper abdomen that plays a key role in digestion. It receives food from the esophagus and uses a combination of muscular contractions and gastric juices—including hydrochloric acid and digestive enzymes—to break down food into a semi-liquid substance called chyme. This process prepares nutrients for absorption further along the digestive tract.
The stomach also acts as a temporary storage site, releasing food gradually into the small intestine. Its inner lining contains specialized cells that secrete mucus to protect against the harsh acidic environment. Hormones produced in the stomach help regulate appetite and digestive activity.
Disorders of the stomach, such as ulcers, gastritis, acid reflux, and cancer, can disrupt normal digestion and cause a range of symptoms. Despite its relatively small size, the stomach is vital to the early stages of nutrient processing and plays an important role in overall digestive health.
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August 23, 2025
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