Advanced Greater Sac Quiz

Q1. Why can appendiceal inflammation spread toward the right upper abdomen through the greater sac?

• The sigmoid mesocolon carries infection to the liver
• The falciform ligament connects the appendix to the diaphragm
• The right paracolic gutter connects lower and upper right-sided peritoneal spaces
• The appendix opens directly into the lesser sac

Q2. Why is the hepatorenal recess examined during focused assessment for intraperitoneal bleeding?

• It is a dependent site for free intraperitoneal fluid in the supine position
• It is an extraperitoneal urinary space
• It is the normal site of the spleen
• It contains the portal vein within its lumen

Q3. How does the transverse mesocolon influence fluid distribution within the greater sac?

• It forms the anterior boundary of the epiploic foramen
• It creates a major boundary between supracolic and infracolic compartments
• It completely divides the peritoneal cavity into sealed chambers
• It separates the greater sac from the retroperitoneum everywhere

Q4. Why can pelvic collections develop from disease originating higher in the greater sac?

• Continuous peritoneal pathways allow fluid to descend into dependent pelvic recesses
• The transverse mesocolon pumps fluid into the pelvis
• The lesser sac drains through the ureters
• The pelvis is directly connected to the pleural cavity

Q5. How does the mesenteric root affect spread within the infracolic compartment?

• It completely isolates the pelvis from the abdomen
• It seals the epiploic foramen
• It divides the supracolic compartment into anterior and posterior halves
• It partitions the infracolic region and influences fluid pathways

Q6. Why may an abscess in the greater sac conform to a recognizable anatomical shape on imaging?

• Peritoneal boundaries shape and direct collections
• Abscesses are always spherical regardless of anatomy
• All intraperitoneal collections occur inside solid organs
• The greater sac has rigid bony walls

Q7. Which anatomical feature makes the greater sac substantially more extensive than the lesser sac?

• It lies entirely within the liver
• It is confined behind the stomach
• It occupies only the right subphrenic space
• It extends through most of the abdominal and pelvic peritoneal cavity

Q8. Why can diaphragmatic irritation occur with a superior greater-sac collection?

• The greater sac does not reach the diaphragm
• The subphrenic spaces are inside the lungs
• Subphrenic collections contact the diaphragmatic peritoneum
• The diaphragm lies inside the lesser omentum

Q9. How do the greater sac and lesser sac differ anatomically?

• The two sacs never communicate
• The greater sac is retroperitoneal and the lesser sac is intrapleural
• The greater sac is the main compartment, while the lesser sac is a posterior gastric recess connected through the epiploic foramen
• The lesser sac is larger and extends farther into the pelvis

Q10. Which statement best integrates the anatomy of the greater sac?

• It is an extraperitoneal space containing the kidneys and aorta
• It is a closed recess with no communication between abdominal regions
• It is an isolated cavity confined behind the stomach
• It is the main interconnected peritoneal compartment whose subdivisions direct fluid movement throughout the abdomen and pelvis