Stomach (Dave's notes) Flashcards
What are the four parts of the stomach?
Fundus, body, pyloric part, greater and lesser curvatures
What is the incisura?
The notch at the distal end of the incisura. This occurs proximal to the pylorus
The stomach is the most …….. part of the GI tract, is relatively ……. at both ends, but…. in the middle
Dilated, fixed, mobile
What are the boundaries of the body of the stomach?
The body extends from the fundus to the angular notch
What are the boundaries of the pyloric part?
The pyloric part extends from the angular notch to the gastroduodenal junction (right of the midline around L1??)
What six anatomical features make up the bed of the stomach?
Left crus, diaphragmatic dome, upper part of the left kidney, and the triangle of the pancreas transversely, spleen upper laterally, and suprarenal upper medially
What arteries supply the stomach?
Left and right gastric, short gastric, left and right gastroepiploic,
What is the blood supply to the lesser curvature?
The left and right gastric which anastomose and may be double
What is the blood supply to the fundus?
The short gastric a. from the splenic
What is the blood supply to the greater curvature?
The left and right gastroepiploic - which also supply the omentum. Gastric branches come off at right angles (c.f. nerves)
Describe the venous drainage of the stomach
Identical to the arterial supply however there is no gastroduodenal vein.
Where does lymph drain to?
Lymph drains to the coeliac nodes. A watershed exists between the lesser and greater curves and LUQ
What is the nerve supply to the stomach?
Sympathetic fibres for vasomotor and parasympathetic (vagal) which controls motility and secretion
What is the course of the nerve supply to the stomach?
Anterior to the lesser omentum and a hepatic branch which gives off a pyloric antrum branch, and posterior giving off a large branch to the coeliac ganglion
Describe the structure of the stomach wall
Outer longitudinal, inner circular layers, reinforced by innermost oblique muscle layer
