Stomach Flashcards
On which the stomach rests in the supine position
Bed of the stomach
Occupies the epigastric and umbilical regions
Stomach
Chief function of the stomach
Enzymatic digestion
The weight of food that the stomach can hold
2-3 L
Longitudinal ridges or wrinkles in the stomach
Gastric folds or ruggae
Temporary groove or furrow-like that forms between gastric folds during swallowing
Gastric canal
Superior opening or inlet of the stomach
Cardia – surrounds cardial orifice
Dilated superior part of the stomach that may be dilated by gas, fluid and food
Fundus
Lies between esophagus and fundus
Cardial notch
Lies between the fundus and pyloric antrum
Body of the stomach
Funnel shaped outflow region of the stomach
Pylorus
Pyloric canal - narrow part
Pyloric antrum - wide part
Cavity of the pylorus
Pyloric canal
Marked thickening of the circular layer of smooth muscle that controls the outflow of gastric contents into the duodenum
Pyloric sphincter
Arises from the hepatic artery and supplies the lower right part of the stomach
R gastric
Arises from the celiac a and supplies the upper part of the stomach and lower third of esophagus
L gastric a
Arise from gastroduodenal branch of hepatic a and supplies the stomach along the lower part of the greater curvature
R gastroomental/gastroepiploic
Arise from splenic a and supplies the stomach along the upper part of greater curvature
L gastro omental
Arise from splenic a and supplies the fundus of the stomach
Short gastric a
R and L gastric veins drain to
Portal vein
R gastro omental v drains to
SMV
L gastro omental and short gastric v drains to
Splenic v
Ascends over the pylorus to the R gastric v
Prepyloric v
Lymph from superior 2/3 of stomach drains to
Gastric LN
Lymph from fundus and superior part of the body of the stomach drains to
Pancreaticosplenic LN
Lymph from R 2/3 of the inferior third of the stomach drains to
Pyloric LN
Lymph from left 1/3 of greater curvature drains to
Pancreaticoduodenal LN
Parasympathetic innervation enters the abdomen through
Esophageal hiatus
Derived from the left vagus,
Enters abdomen as single branch, runs toward lesser curvature and divides into three segments
Anterior vagal trunk
Branches of the anterior vagal trunk
Hepatic
Duodenal
Anterior gastric
Hepatic and duodenal branch of the anterior vagal trunk leaves the stomach as
Hepatoduodenal ligament
Derived from the right vagus and supplies anterior and posterior stomach
Posterior vagal trunk
Branch of posterior vagal trunk that gives rise to posterior gastric branches
Celiac branch
Protrusion of part of the stomach into the mediastinum through the esophageal hiatus of the diaphragm
Hiatal hernia
Weakening of muscular part of diaphragm and widening of esophageal hiatus
Hiatal hernia
Lesions of the mucosa of the stomach associated with H. Pylori
Gastric ulcer
