Greater curvature of the stomach
Encyclopedia
The greater curvature of the stomach is directed mainly forward, and is four or five times as long as the lesser curvature.
, it forms an arch backward, upward, and to the left; the highest point of the convexity is on a level with the sixth left costal cartilage.
From this level it may be followed downward and forward, with a slight convexity to the left as low as the cartilage of the ninth rib; it then turns to the right, to the end of the pylorus
.
Directly opposite the incisura angularis of the lesser curvature the greater curvature presents a dilatation, which is the left extremity of the pyloric part; this dilatation is limited on the right by a slight groove, the sulcus intermedius, which is about 2.5 cm, from the duodenopyloric constriction.
The portion between the sulcus intermedius and the duodenopyloric constriction is termed the pyloric antrum
.
At its commencement the greater curvature is covered by peritoneum
continuous with that covering the front of the organ.
The left part of the curvature gives attachment to the gastrolienal ligament, while to its anterior portion are attached the two layers of the greater omentum
, separated from each other by the gastroepiploic vessels.
Surface
Starting from the cardiac orifice at the incisura cardiacaCardiac notch of stomach
The right margin of the oesophagus is continuous with the lesser curvature of the stomach, while the left margin joins the greater curvature at an acute angle, termed the cardiac notch ....
, it forms an arch backward, upward, and to the left; the highest point of the convexity is on a level with the sixth left costal cartilage.
From this level it may be followed downward and forward, with a slight convexity to the left as low as the cartilage of the ninth rib; it then turns to the right, to the end of the pylorus
Pylorus
The pylorus is the region of the stomach that connects to the duodenum . It is divided into two parts:* the pyloric antrum, which connects to the body of the stomach.* the pyloric canal, which connects to the duodenum....
.
Directly opposite the incisura angularis of the lesser curvature the greater curvature presents a dilatation, which is the left extremity of the pyloric part; this dilatation is limited on the right by a slight groove, the sulcus intermedius, which is about 2.5 cm, from the duodenopyloric constriction.
The portion between the sulcus intermedius and the duodenopyloric constriction is termed the pyloric antrum
Pyloric antrum
Pyloric antrum is the initial portion of the pyloric part of the stomach. It is near the bottom of the stomach, proximal to the pyloric sphincter, which separates the stomach and the duodenum....
.
At its commencement the greater curvature is covered by peritoneum
Peritoneum
The peritoneum is the serous membrane that forms the lining of the abdominal cavity or the coelom — it covers most of the intra-abdominal organs — in amniotes and some invertebrates...
continuous with that covering the front of the organ.
The left part of the curvature gives attachment to the gastrolienal ligament, while to its anterior portion are attached the two layers of the greater omentum
Greater omentum
The greater omentum is a large fold of parietal peritoneum that hangs down from the stomach...
, separated from each other by the gastroepiploic vessels.
Blood supply
There are three arteries which primarily supply the greater curvature:- short gastric arteriesShort gastric arteriesThe short gastric arteries consist of from five to seven small branches, which arise from the end of the splenic artery, and from its terminal divisions....
- upper part - gastric branches of left gastro-omental arteryLeft gastro-omental arteryThe left gastro-omental artery , the largest branch of the splenic artery, runs from left to right about a finger’s breadth or more from the greater curvature of the stomach, between the layers of the greater omentum, and anastomoses with the right gastroepiploic.In its course it distributes:*...
- middle part - gastric branches of right gastro-omental arteryRight gastro-omental arteryThe right gastro-omental artery is one of the two terminal branches of the gastroduodenal artery. It runs from right to left along the greater curvature of the stomach, between the layers of the greater omentum, anastomosing with the left gastroepiploic branch of the splenic artery.Except at the...
- lower part