Greater omentum and splenic ligaments matureGastrocolic, gastrosplenic, and splenorenal folds carry their vessels.
The portal triad and Pringle maneuver
The clamp tests anatomy and hemodynamics at the same time.
The hepatoduodenal ligament encloses the portal vein posteriorly, proper hepatic artery anteromedially, and common bile duct anterolaterally.
Temporary compression reduces hepatic arterial and portal venous inflow; persistent bleeding suggests a source such as hepatic veins or inferior vena cava.
Which structure is not inside the hepatoduodenal ligament?
Pringle stops portal and arterial inflow, not hepatic venous outflow.
Borders of the lesser sac
The omental foramen is the doorway between greater and lesser sacs.
The hepatoduodenal ligament forms the anterior border of the omental foramen, with inferior vena cava posteriorly, caudate lobe superiorly, and first duodenum inferiorly.
Gastrosplenic and splenorenal ligaments form left-sided boundaries around the lesser sac and carry vessels to spleen and stomach.
The gastrocolic ligament hangs from the greater curvature and can be divided surgically to enter the lesser sac.
Open each route into or around the lesser sac.
What each ligament carries
Vessel injury questions are attachment questions wearing scrubs.
Short gastric and left gastroepiploic vessels travel in the gastrosplenic ligament between stomach and spleen.
Splenic artery and vein, along with pancreatic tail, travel in the splenorenal ligament near the splenic hilum.
The gastrocolic portion of greater omentum contains gastroepiploic vessels along the greater curvature and separates stomach from transverse colon.
Open the contained structures.
Falciform ligament
Ligamentum teres hepatis and paraumbilical veins.
Hepatoduodenal ligament
Portal vein, proper hepatic artery, and common bile duct.
Hepatogastric ligament
Gastric vessels along the lesser curvature.
Gastrosplenic ligament
Short gastric and left gastroepiploic vessels.
Splenorenal ligament
Splenic vessels and pancreatic tail.
Gastrocolic ligament
Gastroepiploic vessels and access to the lesser sac.
Lesser versus greater omentum
Embryologic origin sorts the folds into two families.
Falciform, hepatogastric, and hepatoduodenal structures arise from ventral mesentery, although falciform is not part of the lesser omentum.
Gastrocolic, gastrosplenic, and splenorenal ligaments arise from dorsal mesogastrium and belong to the greater-omentum and splenic-ligament family.
Classify each structure by mesenteric origin.
Liver-facing folds are ventral; spleen and greater-curvature folds are dorsal.
Fastest route
The quickest route to the answer
Commit to the clue that should control the first move. The algorithm stays hidden until you choose.
Which clue should control your first move?
Start. free edge of the lesser omentum
Translate. Six ligaments, six connections.
Confirm. Hepatoduodenal ligament.
Cross-check. The portal triad and Pringle maneuver.
Mechanism theatre
Important Gastrointestinal Ligaments
Embryologic origin predicts lesser- or greater-omentum membership.
Watch the causal route
Foregut is suspended by ven…Liver grows into ventral me…Falciform and lesser omentu…
One state changes at a time. Follow the moving signal, then lock the board pattern.
Pattern locked
RouteForegut is suspended by ven… → Liver grows into ventral me… → Falciform and lesser omentu…
PatternEmbryologic origin predicts lesser- or greater-omentum membership.
PearlThe name usually tells both endpoints; the exam asks what rides between them.
Put the map to work
Five original clinical and imaging vignettes make the learner derive the relationship before the explanation appears.
Right-click or press and hold to cross out. Double-click or double-tap to highlight. Cases never repeat until the set is exhausted.
A 52-year-old patient is evaluated before an elective abdominal operation after 3 months of intermittent postprandial discomfort. Temperature is 37.0 C (98.6 F), pulse is 76/min, and blood pressure is 124/78 mm Hg. Abdominal examination reveals no mass, guarding, or rebound; complete blood count and serum chemistry results are normal. The diagnostic review includes computed tomography angiography of the abdomen, which demonstrates the following decisive finding: During splenectomy, a vessel is torn within the ligament between spleen and greater curvature.
Which of the following best vessel is most likely injured?
Reason it through
Which finding should control the first move?The decisive finding is During splenectomy, a vessel is torn within the ligament between spleen and greater curvature. The patient is evaluated further because the finding could change diagnosis or management. Temperature is 37.0 C (98.6 F), pulse is 78/min, respirations are 14/min, and blood pressure is 118/72 mm Hg. Physical examination reveals no peritoneal signs, and the remainder of the examination is unremarkable. Hemoglobin is 13.6 g/dL, leukocyte count is 7,800/mm3, and targeted imaging confirms the described relationship without an additional lesion.
What relationship does that clue establish?It points to Short gastric artery. Short gastric vessels traverse the gastrosplenic ligament.
Why do the alternatives fail?They describe neighboring anatomy or mechanisms, but none explains the full clinical and imaging pattern as directly as Short gastric artery.
Short gastric artery: Short gastric vessels traverse the gastrosplenic ligament.
computed tomography angiography of the abdomenWhat relationship does that clue establish?
Which finding should control the first move?The decisive finding is During splenectomy, a vessel is torn within the ligament between spleen and greater curvature. The patient is evaluated further because the finding could change diagnosis or management. Temperature is 37.0 C (98.6 F), pulse is 78/min...
What relationship does that clue establish?It points to Short gastric artery. Short gastric vessels traverse the gastrosplenic ligament.
Why do the alternatives fail?They describe neighboring anatomy or mechanisms, but none explains the full clinical and imaging pattern as directly as Short gastric artery.
Short gastric artery: Short gastric vessels traverse the gastrosplenic ligament.
A 44-year-old patient presents after blunt abdominal trauma and undergoes evaluation for an occult vascular or organ injury. Temperature is 37.0 C (98.6 F), pulse is 76/min, and blood pressure is 124/78 mm Hg. Abdominal examination reveals no mass, guarding, or rebound; complete blood count and serum chemistry results are normal. The diagnostic review includes contrast-enhanced abdominal computed tomography, which demonstrates the following decisive finding: A clamp across the hepatoduodenal ligament does not slow brisk liver bleeding.
Which of the following best source is most likely?
Reason it through
Which finding should control the first move?The decisive finding is A clamp across the hepatoduodenal ligament does not slow brisk liver bleeding. The patient is evaluated further because the finding could change diagnosis or management. Temperature is 37.0 C (98.6 F), pulse is 78/min, respirations are 14/min, and blood pressure is 118/72 mm Hg. Physical examination reveals no peritoneal signs, and the remainder of the examination is unremarkable. Hemoglobin is 13.6 g/dL, leukocyte count is 7,800/mm3, and targeted imaging confirms the described relationship without an additional lesion.
What relationship does that clue establish?It points to Hepatic vein injury. Hepatic venous outflow is not compressed by the Pringle maneuver.
Why do the alternatives fail?They describe neighboring anatomy or mechanisms, but none explains the full clinical and imaging pattern as directly as Hepatic vein injury.
Hepatic vein injury: Hepatic venous outflow is not compressed by the Pringle maneuver.
contrast-enhanced abdominal computed tomographyWhat relationship does that clue establish?
Which finding should control the first move?The decisive finding is A clamp across the hepatoduodenal ligament does not slow brisk liver bleeding. The patient is evaluated further because the finding could change diagnosis or management. Temperature is 37.0 C (98.6 F), pulse is 78/min, respirations a...
What relationship does that clue establish?It points to Hepatic vein injury. Hepatic venous outflow is not compressed by the Pringle maneuver.
Why do the alternatives fail?They describe neighboring anatomy or mechanisms, but none explains the full clinical and imaging pattern as directly as Hepatic vein injury.
Hepatic vein injury: Hepatic venous outflow is not compressed by the Pringle maneuver.
A 61-year-old patient is referred for staging of a newly identified abdominal mass before multidisciplinary treatment planning. Temperature is 37.0 C (98.6 F), pulse is 76/min, and blood pressure is 124/78 mm Hg. Abdominal examination reveals no mass, guarding, or rebound; complete blood count and serum chemistry results are normal. The diagnostic review includes preoperative magnetic resonance imaging, which demonstrates the following decisive finding: A surgeon divides a ligament between greater curvature and transverse colon to expose the posterior stomach.
Which of the following best space is entered?
Reason it through
Which finding should control the first move?The decisive finding is A surgeon divides a ligament between greater curvature and transverse colon to expose the posterior stomach. The patient is evaluated further because the finding could change diagnosis or management. Temperature is 37.0 C (98.6 F), pulse is 78/min, respirations are 14/min, and blood pressure is 118/72 mm Hg. Physical examination reveals no peritoneal signs, and the remainder of the examination is unremarkable. Hemoglobin is 13.6 g/dL, leukocyte count is 7,800/mm3, and targeted imaging confirms the described relationship without an additional lesion.
What relationship does that clue establish?It points to Lesser sac. Dividing the gastrocolic ligament opens the lesser sac behind the stomach.
Why do the alternatives fail?They describe neighboring anatomy or mechanisms, but none explains the full clinical and imaging pattern as directly as Lesser sac.
Lesser sac: Dividing the gastrocolic ligament opens the lesser sac behind the stomach.
preoperative magnetic resonance imagingWhat relationship does that clue establish?
Which finding should control the first move?The decisive finding is A surgeon divides a ligament between greater curvature and transverse colon to expose the posterior stomach. The patient is evaluated further because the finding could change diagnosis or management. Temperature is 37.0 C (98.6 F), p...
What relationship does that clue establish?It points to Lesser sac. Dividing the gastrocolic ligament opens the lesser sac behind the stomach.
Why do the alternatives fail?They describe neighboring anatomy or mechanisms, but none explains the full clinical and imaging pattern as directly as Lesser sac.
Lesser sac: Dividing the gastrocolic ligament opens the lesser sac behind the stomach.
A 39-year-old patient undergoes an abdominal procedure for a localized disorder that has not responded to conservative management. Temperature is 37.0 C (98.6 F), pulse is 76/min, and blood pressure is 124/78 mm Hg. Abdominal examination reveals no mass, guarding, or rebound; complete blood count and serum chemistry results are normal. The diagnostic review includes intraoperative ultrasonography, which demonstrates the following decisive finding: A 47-year-old patient undergoes operative planning for an abdominal procedure. Vital signs are within normal limits, and the abdominal examination shows no peritoneal signs. The surgeon identifies the following relationship: Natural communication between greater and lesser sacs.. Which structure or region is being described?
Which of the following best option best matches the described relationship?
Reason it through
Which finding should control the first move?The decisive finding is A 47-year-old patient undergoes operative planning for an abdominal procedure. Vital signs are within normal limits, and the abdominal examination shows no peritoneal signs. The surgeon identifies the following relationship: Natural communication between greater and lesser sacs.. Which structure or region is being described? The patient is evaluated further because the finding could change diagnosis or management. Temperature is 37.0 C (98.6 F), pulse is 78/min, respirations are 14/min, and blood pressure is 118/72 mm Hg. Physical examination reveals no peritoneal signs, and the remainder of the examination is unremarkable. Hemoglobin is 13.6 g/dL, leukocyte count is 7,800/mm3, and targeted imaging confirms the described relationship without an additional lesion.
What relationship does that clue establish?It points to Omental foramen. Natural communication between greater and lesser sacs.
Why do the alternatives fail?They describe neighboring anatomy or mechanisms, but none explains the full clinical and imaging pattern as directly as Omental foramen.
Omental foramen: Natural communication between greater and lesser sacs.
intraoperative ultrasonographyWhat relationship does that clue establish?
Which finding should control the first move?The decisive finding is A 47-year-old patient undergoes operative planning for an abdominal procedure. Vital signs are within normal limits, and the abdominal examination shows no peritoneal signs. The surgeon identifies the following relationship: Natural...
What relationship does that clue establish?It points to Omental foramen. Natural communication between greater and lesser sacs.
Why do the alternatives fail?They describe neighboring anatomy or mechanisms, but none explains the full clinical and imaging pattern as directly as Omental foramen.
Omental foramen: Natural communication between greater and lesser sacs.
A 57-year-old patient is evaluated for recurrent abdominal symptoms before a planned image-guided intervention. Temperature is 37.0 C (98.6 F), pulse is 76/min, and blood pressure is 124/78 mm Hg. Abdominal examination reveals no mass, guarding, or rebound; complete blood count and serum chemistry results are normal. The diagnostic review includes a multiplanar abdominal imaging review, which demonstrates the following decisive finding: During an abdominal operation, the surgical team follows the anatomic sequence relevant to Important Gastrointestinal Ligaments. The dissection has reached this point: Liver grows into ventral mesentery. The patient is hemodynamically stable, and no variant anatomy is seen. Which step or relationship should be encountered next?
Which of the following best event or relationship most directly follows?
Reason it through
Which finding should control the first move?The decisive finding is During an abdominal operation, the surgical team follows the anatomic sequence relevant to Important Gastrointestinal Ligaments. The dissection has reached this point: Liver grows into ventral mesentery. The patient is hemodynamically stable, and no variant anatomy is seen. Which step or relationship should be encountered next? The patient is evaluated further because the finding could change diagnosis or management. Temperature is 37.0 C (98.6 F), pulse is 78/min, respirations are 14/min, and blood pressure is 118/72 mm Hg. Physical examination reveals no peritoneal signs, and the remainder of the examination is unremarkable. Hemoglobin is 13.6 g/dL, leukocyte count is 7,800/mm3, and targeted imaging confirms the described relationship without an additional lesion.
What relationship does that clue establish?It points to Falciform and lesser omentum form. Falciform lies anterior; lesser omentum links liver to stomach and duodenum.
Why do the alternatives fail?They describe neighboring anatomy or mechanisms, but none explains the full clinical and imaging pattern as directly as Falciform and lesser omentum form.
Falciform and lesser omentum form: Falciform lies anterior; lesser omentum links liver to stomach and duodenum.
a multiplanar abdominal imaging reviewWhat relationship does that clue establish?
Which finding should control the first move?The decisive finding is During an abdominal operation, the surgical team follows the anatomic sequence relevant to Important Gastrointestinal Ligaments. The dissection has reached this point: Liver grows into ventral mesentery. The patient is hemodynamicall...
What relationship does that clue establish?It points to Falciform and lesser omentum form. Falciform lies anterior; lesser omentum links liver to stomach and duodenum.
Why do the alternatives fail?They describe neighboring anatomy or mechanisms, but none explains the full clinical and imaging pattern as directly as Falciform and lesser omentum form.
Falciform and lesser omentum form: Falciform lies anterior; lesser omentum links liver to stomach and duodenum.
Quick answers
Questions students ask
What is the fastest way to solve a Important Gastrointestinal Ligaments question?
Start with the decisive clue, translate it into the mechanism, and use that mechanism to select Hepatoduodenal ligament.
What is the key mechanism in Important Gastrointestinal Ligaments?
Embryologic origin predicts lesser- or greater-omentum membership.
What is the main board memory hook for Important Gastrointestinal Ligaments?
The name usually tells both endpoints; the exam asks what rides between them.
