Peritoneum/Retroperitoneum Flashcards
What structure separates the thorax from the abdominal cavity?
Diaphragm
What structure separates the peritoneum from the retroperitoneum?
Peritoneal membrane
What are the 2 layers of peritoneum?
Visceral
Parietal
What do these layers create?
Potential Space/Cavity
Mesentery
Peritoneal folds connecting small and large bowel to the posterior abdominal wall
Mesocolon
Peritoneum attached to the colon
Connects transverse and sigmoid colon to the posterior abdominal wall
Lesser Omentum
Double layer of mesentery
Connects lesser curvature of stomach and 1st part of duodenum to the visceral surface of the liver
Greater Omentum
Apron-like fold that connects the greater curvature of the stomach and the transverse colon
What structure runs through the falciform ligament?
Ligamentum Teres
What ligaments are formed from the splitting of the falciform ligament?
Triangular and Coronary Ligaments
What structures define the subphrenic space?
Liver
Diaphragm
What ligament divides the subphrenic space into left and right?
Falciform Ligament
What is an alternate name for lesser sac?
Omental Bursa
What are the terms for the opening of the lesser sac?
Greater sac- epipolic
Foramen of Winslow
Omental
Foramen/Neck
What structures lies posterior to the opening of the lesser sac?
IVC
What structure lies superior to the opening of the lesser sac?
Caudate
What structure lies directly anterior to the lesser sac?
Stomach
What retroperitoneal structure lies directly posterior to the lesser sac?
Pancreas
What structure divides the greater sac into supramesocolic and inframesocolic compartments?
Transverse Mesocolon
What does the supramesocolic compartment divide into?
Subphrenic and Subhepatic spaces
What does the inframesocolic compartment divide into?
Paracolic gutters
Pelvic reflections
Which portion of the inframesocolic compartment does not communicate directly with the pelvic cavity?
Right Medial Compartment
Which ligament prevents the left lateral gutter from communicating with the left supramesocolic compartment?
Phrenocolic ligament
What are the anterior and posterior boundaries of the anterior Pararenal space?
Posterior to peritoneum
Anterior to Gerota’s fascia
Major structures with the anterior Pararenal space include:
Ascending/Descending colon
Duodenum
Pancreas
What structure encloses the Perirenal space?
Renal Fascia
Major structures within the Perirenal space include:
Kidneys
Adrenals
Ureters
Great Vessels
3 spaces that communicate with the posterior Pararenal space are:
Anterior Pararenal space
Pelvis
Properitoneal space
