Stomach | |
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![]() Sections of the human stomach | |
![]() Scheme of digestive tract, with stomach in red | |
Details | |
Precursor | Foregut |
System | Digestive system |
Artery | Right gastric artery, left gastric artery, right gastro-omental artery, left gastro-omental artery, short gastric arteries |
Vein | Right gastric vein, left gastric vein, right gastroepiploic vein, left gastroepiploic vein, short gastric veins |
Nerve | Celiac ganglia, vagus nerve[1] |
Lymph | Celiac lymph nodes[2] |
Identifiers | |
Latin | ventriculus, stomachus |
Greek | στόμαχος |
MeSH | D013270 |
TA98 | A05.5.01.001 |
TA2 | 2901 |
FMA | 7148 |
Anatomical terminology |
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Major parts of the |
Gastrointestinal tract |
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The stomach is a muscular, hollow organ in the upper gastrointestinal tract of humans and many other animals, including several invertebrates. The stomach has a dilated structure and functions as a vital organ in the digestive system. The stomach is involved in the gastric phase of digestion, following the cephalic phase in which the sight and smell of food and the act of chewing are stimuli. In the stomach a chemical breakdown of food takes place by means of secreted digestive enzymes and gastric acid.
The stomach is located between the esophagus and the small intestine. The pyloric sphincter controls the passage of partially digested food (chyme) from the stomach into the duodenum, the first and shortest part of the small intestine, where peristalsis takes over to move this through the rest of the intestines.
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