Anatomy - Abdomen Flashcards

1
Q

What Is the greater omentum composed of and what does it connect?

A
  • 4 layers of visceral peritoneum
  • Connects stomach and proximal duodenum to transverse colon
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2
Q

What is the lesser omentum composed of and what does it connect?

A
  • 2 layers of visceral peritoneum
  • Consists of hepatogastric ligament and hepatoduodenal ligament
  • Connects stomach and proximal duodenum to liver
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3
Q

What are the 2 compartments of the greater sac?

Where are they loacted and what doi they contain?

A

Supracolic compartment - above transverse mesocolon, contains stomach, liver and spleen

Infracolic compartment - below transverse mesocolon, contains small intestine, ascending and descending colon

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4
Q

Where is the lesser sac located?

What connects it to the greater sac?

A

Posterior to stomach and lesser omentum

Epiploic foramen

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5
Q

Whjat are the 3 midline branches of the aorta?

A

Coeliac trunk

Superior mesenteric artery

Inferior mesenteric artery

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6
Q

At what level is the coeliac trunk located?

What are its 3 main branches?

A

T12

Left gastric artery

Splenic artery

Common hepatic artery

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7
Q

What is the course of the left gastric artery?

A

Ascends across diaphragm

Anastomoses with right gastric artery

Has oesophageal branch then continues along lesser curve of anterior stomach

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8
Q

What is the course of the splenic artery?

A

Along superior margin of pancreas

5 terminal branches to the spleen

Branches = left gastroepiploic, short gastric and pancreatic

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9
Q

What are the 2 terminal branches of the common hepatic artery?

What are their branches?

A

Proper hepatic artery - right gastric and right and left hepatic arteries

Gastroduodenal artery - right gastroepiploic and superior pancreaticoduodenal arteries

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10
Q

At what level is the superior mesenteric artery?

What does it supply?

A

L1

Supplies midgut from duodenum to proximal 2/3 of transverse colon

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11
Q

What are the branches of the superior mesenteric artery?

A

Inferior pancreaticoduodenal artery

Jujunal and ileal arteries

Middle and right colic arteries

Ileocolic artery

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12
Q

What is the first branch of the superior mesenteric artery?

What is its course and what does it supply?

A

Inferior pancreaticoduodenal artery

Anastomoses with superior pancreaticoduodenal artery

Supplies inferior head of pancreas, unicate process and duodenum

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13
Q

Where are the jejunal and ileal arteries located?

What do they form?

What are the differences between the jejunal and ileal arterial supply?

A

Between mesentery layers

Form anastomotic arcades

Jejunal = - arcades, longer vasa recta

Ileal = + arcades, shorter vasa recta

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14
Q

What do the middle and right colic arteries supply?

A

Middle = supplies transverse colon

Right = supplies ascending colon

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15
Q

Where does the ileocolic artery branch off to?

What is the clinical relevance?

A

Ascending colon, appendix, caecum and ileum

Appendicular artery = ligated during appendectomy

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16
Q

What lies anterior to the superior mesenteric artery?

A

Pyloric stomach

Splenic vein

Neck of pancreas

17
Q

What lies posterior to the superior mesenteric artery?

A

Inferior duodenum

18
Q

What does the inferior mesenteric artery supply?

At what level does it lie?

A

Hindgut - distal 1/3 of transverse colon, splenic flexure, descending colon, sigmoid colon and rectum

L3 - is retroperitoneal

19
Q

What are the 3 branches of the inferior mesenteric artery?

A

Left colic artery

Sigmoid arteries

Superior rectal arteries

20
Q

What does the left colic artery supply?

A

`Distal transverse colon and descending colon

21
Q

What does the sigmoid artery supply?

A

Descending colon and sigmoid colon

22
Q

What does the superior rectal artery supply?

A

2 temrinal branches to rectum