This article – the second in a six-part series on the gastrointestinal tract – describes the role of the stomach in chemical and mechanical digestion, regulation of hunger, eradication of pathogens ...

Stomach acid, primarily hydrochloric acid, plays a vital role in digestion by breaking down food and enabling nutrient absorption. It acts as a crucial defense against harmful microorganisms, ...

The cardia is the entrance to the stomach at the bottom of the esophagus. Food and liquids initially pass through the cardia before entering the stomach. The cardia is one of four main parts of the ...

The fundus is a dome-shaped part of the stomach that stores gas from digestion. It can also hold food if the stomach becomes full. The stomach is an important part of the digestive system. It stores ...