Duodenum

Question 1

The duodenum is divided into how many parts and name their measurements

Answer 1

It’s divided into 4 parts
1st- upper 5cm
2nd- vertical 8cm-10cm
3rd-horizontal 10cm
4th- ascending 2.5

Question 2

The first part of the duodenum extends from the?

Answer 2

Pylorus to the superior duodenal flexure

Question 3

The first part of the duodenum is supplied by?

Answer 3

End arteries

Question 4

The artery of welkie supplies which section of the duodenum?

Answer 4

Upper 2/3rd of the anterior surface and the upper 1/3rd of the posterior surface

Question 5

What other artery supplies the posterior surface of the duodenum apart from the artery of welkie?

Answer 5

Retro duodenal artery ( branches from the gastro-duodenal artery

Question 6

What artery supples the lower margin of the duodenum?

Answer 6

Infra duodenal artery which is the branch of the right gastro-epiploic artery

Question 7

What part of the duodenum is the most moveable?

Answer 7

First part

Question 8

In barium meal x ray a classical feature of the 1st part is?

Answer 8

It shows a triangular radio opaque shadow known as the duodenal cap

Question 9

In what cases is the duodenal cap distorted during x ray?

Answer 9

Peptic ulcers
Nb: the first part is more prone to ulcers

Question 10

The second part of the duodenum starts at?

Answer 10

Superior duodenal flexure which is opposite L1

Question 11

The 2nd part ends at?

Answer 11

L3 at the inferior duodenal flexure

Question 12

Police circulars is?

Answer 12

Permanent folds in the the duodenum

Question 13

Where is the major duodenal papillae situated?

Answer 13

8-10cm distal to the pylorus

Question 14

The pancreatic duct joins with the common bile duct to form which structure?

Answer 14

Ampulla of vater

Question 15

The ampulla of Vater opens into the lumen of the duodenum through a structure called the?

Answer 15

Major duodenal papillae

Question 16

The mi or duodenal papillae is situated?

Answer 16

2cm above the major papillae

Question 17

What structure forms the minor duodenal papillae?

Answer 17

Accessory pancreatic duct

Question 18

Speak on the plica semi-circularis and plica longitudinalis

Answer 18

The semi…arches over the major papillae and resembles a monks hood

The longi… a vertical mucosal folds that extends downwards from major papillae

Question 19

The third part of the duodenum extends from?

Answer 19

The inferior duodenal flexure to the front of the aorta at level of L3

Question 20

The fourth part of the duodenum extends from?

Answer 20

The arch of aorta to the duodenal jejunal flexure

Question 21

The duodenal jejunal flexure is situated at which level and kept in position by?

Answer 21

At L2 and kept in position by suspenders muscle of duodenum

Question 22

Ligament of treitz extends from?

Answer 22

The right crux of the diaphragm close to the esophageal opening

Question 23

The ligament of treitz is attached to?

Answer 23

The superior posterior surface of the duodenal jejunal flexure

Question 24

Describe the structure of the muscle in the ligament

Answer 24

Upper 3rd- striated muscle
Middle 3rd- elastic tissue
Lower 3rd- striped muscle

Question 25

The ligament is developed from?

Answer 25

The superior retention band of the u shaped loop of primitive mid gut

Question 26

Most of the duodenum is suplied by which artery? (With the exception being the 1st part)

Answer 26

Ventral and dorsal anastomosis of superior and inferior pancreatico-duodenal arteries

Question 27

The vasa texts of the anterior part supplies the?veins corresponds to the arteries and drains into?

Answer 27

Superior mesenteric vein and into the trunk of the portal vein

Question 28

Lymph vessels drains into?

Answer 28

pancreatico-duodenal lymph nodes

Question 29

Efferents from the pancreatic duodenal lymph nodes drain into ?

Answer 29

The coelic and superior mesenteric groups of preaortic lymph nodes

Question 30

The moble parts of the small intestines are?

Answer 30

Jejunum and ileum

Question 31

The jejunum and the ileum are how many feet tall respectively?

Answer 31

8ft and 12ft

Question 32

The jejunum and the ileum extends from?

Answer 32

Duodenal jejunal flexure to ileo cecal junction

Question 33

Jejunum and ileum is suspended to the abdominal wall by?

Answer 33

Mesentery

Question 34

What nerve coordinates gut movement?

Answer 34

Exterensic component which is derived from ed from sympathetic and para sympathetic nerves

Question 35

Meckels diverticulum is a remnant of?

Answer 35

Proximal part of vitello-intestinal duct

Question 36

The mesentery is derived from, and has which two layers?

Answer 36

It’s derived from the greater sac and the two layers are vertebral border/root -‘d intestinal border/root

Question 37

The free border of the mesentery is how many feet long?

Answer 37

20ft

Question 38

What are the measurements of the mesentery is?

Answer 38

6inches

Question 39

The root of mesentery extends from?

Answer 39

L2 duodenal jejunal flexure to right sacral iliac joint at the ilio ceacal junction

Question 40

The superior mesenteric artery arises from the front of?

Answer 40

Aorta 1cm below the coelic trunk opposite to L1 vertebra

Question 41

The superior mesenteric artery supplies which other structure?

Answer 41

The large intestines up to the right 2/3rd and left 1/3rd of the transverse colon And the head of the pancreas