Chapter 5: Stomach Flashcards
Most proximal portion of the stomach immediately distal to the GEJ
Cardia
Most superior portion of the stomach
Fundus
Largest portion of the stomach
Corpus/Body
Extends from the fundus to the pylorus
Corpus/Body
Begins at the angularis incisura as a wider area that leads into a narrower pyloric canal and sphincter
Antrum
Part of the stomach that includes the pyloric sphincter
Pylorus
Cells that produce pepsinogen in response to food and acethylcholine
Chief cells
pH level wherein pepsinogen is activated to pepsin
<5 pH
Cells that secretes HCl and Intrinsic Factor
Parietal/Oxyntic cells
Secretes mucous and HCO3-
Mucous neck cells
Secrete gastrin
G cells
Secrete somatostatin
D cells
Secrete serotonin
Enterochromaffin cells/Kulchitsky cells
Secrete histamine
Enterochromaffin-like cells
Supplies the proximal portion of the lesser curvature
Originates from the celiac trunk
Left gastric artery
Supplies the distal portion of the lesser curvature
Originates from the common or proper hepatic artery
Right gastric artery
Supplies the proximal portion of the greater curvature
Originates from the splenic artery
Left gastroepiploic artery
Supplies the distal portion of the greater curvature and the pylorus
Originates from gastroduodenal artery
Right gastroepiploic artery
Contribute to the supply of proximal stomach
Short gastric arteries
Supplies the acetylcholine-mediated, parasympathetic innervation of the stomach
Vagus nerve
Supplies sympathetic innervation of the stomach
Celiac plexus
Enteric nervous system is composed of the following plexuses
Auerbach’s and Meissner’s plexuses