18 Questions
Where is the stomach mainly located?
Epigastric region
What attaches the liver to the lesser curvature of the stomach?
Lesser omentum
What is the function of the pylorus in the stomach?
It connects the stomach to the duodenum
Which structure attaches the greater curvature of the stomach to the posterior body wall?
Greater omentum
At what level does the pyloric sphincter demarcate the transpyloric plane?
L1
Which of the following structures is NOT related to the posteroinferior surface (stomach bed) of the stomach?
Right colic flexure
Which part of the stomach surrounds the superior opening at the T11 level?
Cardia
What artery supplies the lesser curvature of the stomach?
Left gastric artery and right gastric artery
What are the two main curvatures of the stomach?
Greater and Lesser Curvatures
Which artery supplies the greater curvature of the stomach?
Right gastroepiploic artery
What arteries supply the fundus of the stomach?
Short gastric arteries
Which plane is also known as the subcostal plane?
Transpyloric Plane
Which of the following statements about the nerve supply to the stomach is correct?
The sympathetic nerves are derived from the spinal cord via the greater splanchnic nerves, celiac and hepatic plexuses.
What is the main function of the Greater Omentum in relation to the stomach?
Protection against infections
What is the main function of the lesser omentum regarding the stomach?
Supporting the structure of the stomach
Which of the following arteries is a branch of the common hepatic artery?
Proper hepatic artery
What is the primary role of the pyloric canal in stomach function?
Transport of food to the intestines
Which of the following arteries is NOT a branch of the gastroduodenal artery?
Left gastric artery
Study Notes
Stomach Planes and Abdominal Regions
- The stomach is divided into horizontal and vertical planes
- Horizontal planes: Transpyloric Plane (subcostal plane) at R9 - L1 and Intertubercular Plane at L5
- Vertical planes: 2 Mid Clavicular Lines
- 9 abdominal regions: right hypochondriac, left hypochondriac, right lumbar, left lumbar, right iliac, left iliac, epigastric, umbilical, and hypogastric regions
Stomach Location and Structure
- The stomach is an intraperitoneal digestive organ located between the esophagus and the duodenum
- It has a ‘J’ shape, with a lesser and greater curvature
- The anterior and posterior surfaces are smoothly rounded with a peritoneal covering
Parts of the Stomach
- Cardia: surrounds the superior opening of the stomach at the T11 level
- Fundus: the rounded, often gas-filled portion superior to and left of the cardia
- Body: the large central portion inferior to the fundus
- Pylorus: connects the stomach to the duodenum, divided into the pyloric antrum, pyloric canal, and pyloric sphincter
Curvatures of the Stomach
- Greater curvature: forms the long, convex, lateral border of the stomach
- Lesser curvature: forms the shorter, concave, medial surface of the stomach
Peritoneal Attachments
- Lesser omentum: attaches the liver to the lesser curvature
- Greater omentum: attaches the greater curvature to the posterior body wall
Surfaces of the Stomach
- Anterosuperior surface: related to the left lobe of the liver, diaphragm, ant. abdominal wall, and 7, 8, 9 ribs
- Posteroinferior surface (stomach bed): related to the spleen, Lt. kidney, Lt. suprarenal gland, pancreas, left colic flexure, splenic artery, and diaphragm
Blood Supply
- Left gastric artery: supplies the lesser curvature
- Right gastric artery: supplies the lesser curvature
- Right gastroepiploic artery: supplies the greater curvature
- Short gastric arteries: supply the fundus
- Cystic artery: a branch of the hepatic artery
Nerve Supply
- Sympathetic nerves: derived from the spinal cord, via the greater splanchnic nerves, coeliac and hepatic plexuses
- Parasympathetic nerves: derived from the vagi through gastric nerves
Test your knowledge on the stomach's position in relation to different planes and abdominal regions. Explore topics such as the transpyloric plane, intertubercular plane, and the various regions around the stomach.
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