What is the stomach?

The stomach is a hollow organ in the upper abdomen, just under the ribs. Its primary function is to receive food from the esophagus, digest it and turn it into liquid/semi-liquid and send it through the lower digestive tract.

The stomach has five layers:
  • Inner layer: lining of the stomach
  • Submucosa: support tissue for inner layer
  • Muscle layer: muscles of the stomach
  • Subserosa: support tissue for the outer layer
  • Outer layer: outer lining, also called serosa

Continue Learning about Digestive Health

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.