A  A  A   Print
Anatomy of the Stomach

Anatomy of the Stomach

The stomach is a J-shaped organ in the upper abdomen that makes up part of the digestive system. It is located between the end of the esophagus and the beginning of the first part of the small bowel (the duodenum).

Illustration of liver and biliary system
Click to Enlarge

The stomach is much like a bag with a lining. The lining contains these 5 layers:

  • Mucosa. The first and innermost layer, the mucosa, holds the glands that release digestive juices, called hydrochloric acid and pepsin.

  • Submucosa. The second layer, the submucosa, supports the mucosa. It is rich in blood vessels.

  • Muscularis. The third layer, the muscularis, contains muscles that help to mix food with the digestive juices.

  • Subserosa. This layer contains supporting tissues for the serosa.

  • Serosa. The serosa is the last and outermost layer. It is the lining that wraps around the stomach to confine it.

After food has been chewed and swallowed, it enters the stomach from the food pipe (esophagus). At this point, pepsin and hydrochloric acid are released and the muscles in the stomach lining create a rippling motion, which combines the food with the digestive juices. After about 2 to 3 hours, partially digested food moves into the small intestine, where it is broken down further and absorbed into the body.

anatomy of the stomach
The Stomach

 
Related Items

The third-party content provided in the Health Library of phoebeputney.com is for informational purposes only and is not designed to diagnose or treat a health problem or disease, or replace the professional medical advice you receive from your physician. If you or your child has or suspect you may have a health problem, please consult your primary care physician. If you or your child may have a medical emergency, call your doctor or 911 or other emergency health care provider immediately in the United States or the appropriate health agency of your country. For more information regarding site usage, please visit: Privacy Information, Terms of Use or Disclaimer.

Follow us online:

© 2014 Phoebe Putney Health System  |  417 Third Avenue, Albany, Georgia 31701  |  Telephone 877.312.1167

Phoebe Putney Health System is a network of hospitals, family medicine clinics, rehab facilities, auxiliary services, and medical education training facilities. Founded in 1911,
Phoebe Putney Memorial Hospital (the flagship hospital) is one of Georgia's largest comprehensive regional medical centers. From the beginning, Phoebe's mission and vision
has been to bring the finest medical talent and technology to the citizens of Southwest Georgia, and to serve all citizens of the community regardless of ability to pay.