Stomach

Gaster

A J-shaped muscular organ in the left upper quadrant of the abdomen. It has four regions: cardia, fundus, body, and pylorus. The greater and lesser curvatures define its borders. Three layers of smooth muscle (oblique, circular, longitudinal) enable powerful mixing movements.

Type Organ
Body System Digestive
Body Region Abdomen
Latin Name Gaster
FMA ID 7148

Function

Serves as a reservoir for ingested food, mixing and partially digesting it with gastric juice containing hydrochloric acid and pepsin. Mechanical churning converts food into chyme. Produces intrinsic factor for vitamin B12 absorption.

Clinical Significance

Peptic ulcers result from mucosal erosion by acid and Helicobacter pylori. Gastric cancer is a major cause of cancer mortality. Gastroesophageal reflux disease (GERD) causes chronic heartburn. Gastrectomy is performed for cancer and severe ulcer disease.

Sub-structures

ruminant stomach Gland

Frequently Asked Questions

What is the Stomach?
A J-shaped muscular organ in the left upper quadrant of the abdomen. It has four regions: cardia, fundus, body, and pylorus. The greater and lesser curvatures define its borders. Three layers of smooth muscle (oblique, circular, longitudinal) enable powerful mixing movements.
What is the function of the Stomach?
Serves as a reservoir for ingested food, mixing and partially digesting it with gastric juice containing hydrochloric acid and pepsin. Mechanical churning converts food into chyme. Produces intrinsic factor for vitamin B12 absorption.
What body system is the Stomach part of?
The Stomach is part of the Digestive.
What conditions affect the Stomach?
Peptic ulcers result from mucosal erosion by acid and Helicobacter pylori. Gastric cancer is a major cause of cancer mortality. Gastroesophageal reflux disease (GERD) causes chronic heartburn. Gastrectomy is performed for cancer and severe ulcer disease.
Where is the Stomach located?
The Stomach is located in the Abdomen region of the body.

Related Structures

1st arch mandibular endoderm endoderm of mandibular component 1st arch maxillary endoderm endoderm of maxillary component alimentary part of gastrointestinal system alimentary system anterior ectodermal midgut anterior intestinal portal fovea cardiaca anus anal opening associated mesenchyme of foregut-midgut junction baleen feeding system

Medical Disclaimer

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