Superior mesenteric vessels, bowel, pancreas

Question 1

What are the organs derived from the foregut?

Answer 1

• Liver, gall bladder, pancreas, spleen

Question 2

Describe the position of the pancreas and list all its parts.

Answer 2

• Posterior to stomach.
• 5 parts: head, neck, body, tail, uncinate process.

Question 3

What part of the pancreas is not retroperitoneal?

Answer 3

• Tail.

Question 4

In which ligament does the tail of the pancreas run?

Answer 4

• The gastrosplenic ligament.

Question 5

What is the main pancreatic duct?

Answer 5

• Duct of Wirsung connects pancreatic duct to the common bile duct.
• Enters the major duodenal papilla.

Question 6

What is the name the accessory duct of the pancreas?

Answer 6

• Duct of Santorini.

Question 7

What must the common bile duct and pancreatic duct pass through before entering the duodenum?

Answer 7

• Sphincter of oddi
• Ampulla of vater
• Major papilla

Question 8

What is the arterial supply of pancreas?

Answer 8

• Common hepatic artery - gasproduodenal artery - ant. + post. pancreaticoduodenal arteries.
• Splenic artery.

Question 9

What is the venous drainage of the pancreas?

Answer 9

• SMV + Splenic vein.

Question 10

How long is the jejunum and ileum?

Answer 10

• 10 feet (3m)

Question 11

Which section of the small intestine has a thicker wall, wider lumen, and more plicae circularis?

Answer 11

• Jejunum

Question 12

What are the characteristics of vasa recta in ileum?

Answer 12

• They’re shorter and more numerous.

Question 13

What is Meckel’s diverticulum?

Answer 13

• Remnant of embryonic vitello-intestinal duct
• An out-pouching of distal ileum.

Question 14

What is the location of McBurney’s point?

Answer 14

• In the RLQ, 1/3 distance from ASIS to umbilicus (appendix).

Question 15

What is Diverticulitis?

Answer 15

• Inflammation of a diverticulum.
• A diverticulum is a pocket that develops in the wall of the intestine.

Question 16

What are branches of superior mesenteric artery?

Answer 16

1. Inferior pancreaticoduodenal
2. Intestinal arteries (jejunum and ileum + form vascular arcades and vasa recta at gut wall).
3. Ileocolic artery (distal ileum and cecum).
4. Right colic (ascending colon).
5. Middle colic (proximal 2/3rds of transverse colon).

Question 17

What are branches of the Inferior mesenteric artery?

Answer 17

1. Left colic artery
2. Sigmoid arteries
3. Superior rectal artery

Question 18

What is the anastomosis between the SMA and IMA?

Answer 18

• Marginal artery of Drummond.
• It lies in the mesentery close to the colon and is
  an important anastomosis if one of SMA or IMA is blocked.

Question 19

What is the anastomosis between SMA and coeliac trunk?

Answer 19

• Gastroduodenal artery and inferior pancreaticoduodenal artery.