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.
Función
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.
Significado clínico
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.
Subestructuras
Preguntas frecuentes
What is the Stomach?
What is the function of the Stomach?
What body system is the Stomach part of?
What conditions affect the Stomach?
Where is the Stomach located?
Estructuras relacionadas
Aviso médico
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