Peritoneum
What is the great omentum?
A large apron-like fold that attaches to the greater curvature of the stomach and first part of duodenum
What is the sigmoid mesocolon?
An inverted V shaped fold that attaches the sigmoid colon to abdominal wall
What structures surround the omental foramen?
Anteriorly; portal vein, hepatic proper and bile duct, posteriorly; inferior vena cava, superiorly; caudate lobe of liver, inferiorly; first part of deudenum
What is located in the fat between the two peritoneal layers of mesentery?
Arteries, veins, nerves and lymphatics that supply the jejunum and ileum
What is the function of peritoneal ligaments?
Connect two organs to each other or an organ to the bod wall
What is the function of the transverse mesocolon?
Connects the transverse colon to the posterior abdominal wall
Which peritoneal folds help maintain the proper positioning of the viscera and nerve and blood supply?
Dorsal and ventral mesenteries
What are the characteristics of the greater omentum?
Drapes inferiorly over the transverse colon and coils the jejunum and ileum turns posteriorly and ascends to adhere the peritoneum on superior surface of transverse colon and anterior layer of mesocolon
What are the characteristics of the lesser omentum?
Extends from lesser curvature of stomach and first part of duodenum to inferior surface of the liver
What are the characteristics of the mesentery?
Its superior attachment is the duodenojejunal junction to the left of the upper lumbar part of the vertebral column.it passes obliquely downward to the right ending at the ileocecal junction near upper border of the right sacro-iliac joint
What is the blood supply and venous drainage of the greater omentum?
Left and right gastro-omental arteries and veins which lie between the fold inferior to greater curvature of stomach
Which nerves innervate the parietal and viscera peritoneum ?
Somatic afferents and visceral afferents
What are some examples of peritoneal ligaments?
Splenorenal ligament connects the left kidney to the spleen and gastropheric ligament connects the stomach to the diaphragm
What are the characteristics of the S. mesocolon?
The apex of the V is near the division of the left common iliac artery. Left limb of descending V along medial border of left psoas major and right limb descending into pelvis to end at SIII. The sigmoid and susperior rectal vessels, nerves, lymphatics are associated with sigmoid colon pass through the fold
Peritoneal cavity is divided into greater sac and omental bursa what are the locations of the two sacs?
The greater sac is superiorly at diaphragm and continuing inferiorly to pelvic cavity. The lesser sac is posterior to the stomach and liver and continuous with greater sac through the omental foramen
What is peritoneum ?
a thin membrane that lines the walls of the abdominal cavity and covers much of the viscera
What are the characteristics of the T, mesocolon ?
goes across anterior surface of the head and body of pancreas and pass outward to surround transverse colon. Anterior layer of T. mesocolon is adherent to the posterior layer of greater omentum
Organs in the peritoneal cavity are referred to as_ and those outside the peritoneal cavity are referred to as _
intraperitoneal and retroperitoneal
Mesentery is a large double layered fold that connects_ and_ to the posterior abdominal wall
jejunum and ileum
Lesser omentum divides into _ which is in between stomach and liver and the_ between the duodenum and liver
medial hepatogastric ligament and lateral hepatoduodenal ligament
