Abdominal Viscera and Collateral Circulation Flashcards
Space bounded by abdominal walls, diaphragm and pelvis within which lie the greater part of the
digestive organs, spleen, kidneys, and suprarenal glands
Abdominal cavity
What are the two subdivisions of the abdominal cavity?
- ) Greater peritoneal sac
2. ) Lesser peritoneal sac
Includes all of the peritoneal cavity except for the omental bursa
Greater peritoneal sac
The greater peritoneal sac can be subdivided into the
Supracolic and infracolic compartments
The boundary between the supracolic and infracolic compartments is the
Transverse mesocolon and greater omentum (which are fused together)
The supracolic compartment contains the
Stomach, liver, and spleen
The infracolic compartment contains the
Small intestine, ascending colon, and descending colon
The part of the peritoneal cavity posterior to the stomach, lesser omentum, and gastrosplenic ligament
Lesser Peritoneal Sac (omental bursa)
The lesser sac communicates with the greater sac via the
Omental foramen (epiploic foramen or foramen of winslow)
What is the anterior border of the omental foramen?
Portal vein, proper hepatic artery, and common bile duct
What is the posterior boundary of the omental foramen
Inferior vena cava and right crus of the diaphragm
What is the SUPERIOR boundary of the omental foramen
Caudate lobe of the liver
What is the INFERIOR boundary of the omental foramen
First part of the duodenum
A double layer of peritoneum connecting abdominal wall to a viscus
-contains neurovascular structures andlymphatics
Mesentery
Mesenteries serve as a bridge between
Parietal and Visceral peritoneum
Mesentery may be given a name specific to the organ it is attached to. What is the name of the mesentery attached to the:
- ) Stomach
- ) Small intestine
- ) Appendix
- ) Mesogastrium
- ) Mesentery proper
- ) Mesoappendix
Mesentery may be given a name specific to the organ it is attached to. What is the name of the mesentery attached to the:
- ) Sigmoid colon
- ) Transverse colon
- ) Sigmoid mesocolon
2. ) Transverse mesocolon
Double layer of peritoneum connecting two viscera or viscus and abdominal wall
Peritoneal ligament
A subcategory of ligament connecting stomach to another organ
Omentum
What do the following omentum connect?
- ) Gastrohepatic (part of lesser omentum)
- ) Hepatoduodenal (part of lesser omentum)
- ) Liver and stomach
2. ) Liver and duodenum
What do the following omentum connect?
- ) Gastrosplenic (part of greater omentum)
- ) Gastrocolic (part of greater omentum)
- ) Splenorenal
- ) Stomach and spleen
- ) Stomach and transverse colon
- ) Spleen and posterior abdominal wall
The foregut (esophagus, stomach, proximal portion of duodenum) is supplied by the
Celiac trunk
The celiac trunk gives rise to the
Common hepatic, left gastric, and splenic arteries
The midgut is supplied by the
Superior mesenteric artery
The hindgut is supplied by the
Inferior mesenteric artery
Venous return to the digestive tract is to the
Hepatic portal system (NO valves)
Drains embryonically peritoneal organs (i.e. adult peritoneal and adult secondary retroperitoneal)
Hepatic Portal Vein
Drains embryonically retroperitoneal organs (i.e. adult primary retroperitoneal)
Inferior Vena Cava
There are 4 anastomoses in the portal system. The left gastric vein anastomoses with the
Azygos vein (esophageal varices)
There are 4 anastomoses in the portal system. The superior rectal veins anastomose with the
Inferior and middle rectal veins (internal hemorrhoids)
There are 4 anastomoses in the portal system. The Paraumbilical veins anastomose with the
Epigastric veins (caput medusae)
There are 4 anastomoses in the portal system. The colic veins anastomose with the
Retroperitoneal veins
Tend to follow the vascular system
Lymphatic pathways
Interposed in the lymphatic channels
Lymph nodes
Pattern of lymphatic drainage determines lymphatic spread of
Epithelial malignancies
Conduit for food
Abdominal esophagus
Function in digestion
Stomach and duodenum
Function in absorption
Small intestine (duodenum, jejunum, ileum)
Functions in the resorption of water and storage of stool
Colon
Biliary tree and pancreas contribute substances which aid
Digestion