L5 “small Intestine”

Question 1

The longest part of the alimentary canal?

Answer 1

Small intestine

Question 2

Small intestine extend from ……. To …… ?

Answer 2

Pylorus of stomach to the ileocecal junction

Question 3

Parts of small intestine?

Answer 3

Duodenum, Jejunum, Ileum

Question 4

Fixed part (Retro peritoneal) with no mesentery

Answer 4

Duodenum

Question 5

Free (movable) part with mesentery

Answer 5

Jejunum and ileum

Question 6

Shape of duodenum

Answer 6

C shaped loop

Question 7

Length of duodenum

Answer 7

10 inches

Question 8

Beginning of duodenum?

Answer 8

At pyloro-duodenal junction

Question 9

Termination of duodenum?

Answer 9

At duodenum-jejunal flexure

Question 10

Peritoneal covering of duodenum?

Answer 10

Retroperitoneal

Question 11

Parts of duodenum?

Answer 11

1.Superior (2inch)
2.Descending (3inch)
3.inferior (4inch)
4.ascending (1inch)

Question 12

Relation of first part of duodenum

Answer 12

Anteriorly: Liver

Posterior: Bile duct, Gastroduodenal artery, portal vein

Question 13

Relation of second part of duodenum?

Answer 13

Anterior:
liver, transverse colon, small intestine

Posterior:
right kidney

Lateral:
Right colic flexure

Medial:
Pancreas

Question 14

Common opening of bile duct and main pancreatic duct?

Answer 14

Summit of major duodenal papilla

Question 15

Opening of accessory pancreatic duct

Answer 15

“One inch higher” on minor duodenal papilla

Question 16

Duodenum derived from?

Answer 16

Foregut and midgut

Question 17

Arterial supply of small intestine

Answer 17

Celiac and superior mesenteric arteries.

Question 18

Venous drainage of small intestine

Answer 18

Superior mesenteric and portal veins

Question 19

Lymphatic drainage of small intestine

Answer 19

Celiac and superior mesenteric lymph nodes

Question 20

Ligament of Treitz supports and anchors?

Answer 20

Duodenum (the first part of the small intestine) and helps move content along the GIT

Question 21

Most common site for peptic ulcer

Answer 21

First part of duodenum

Question 22

Which part is vulnerable?

Answer 22

3rd part as it lies anteriorly to vertebral column

Question 23

Shape of jejunum and ileum

Answer 23

Coiled tube

Question 24

Length of jejunum and ileum

Answer 24

6 meters

Question 25

Beginning of jejumum and ileum

Answer 25

Duodeno-jejunal flexure

Question 26

Termination of Jejunum and ileum

Answer 26

At ilieo-caecal junction

Question 27

Embryological origin of Jejunum and ileum

Answer 27

Midgut

Question 28

Blood supply of Jejunum and ileum

Answer 28

Superior mesenteric A and V

Question 29

Lymphatic drainage of Jejunum and ileum

Answer 29

Superior mesenteric lymph nodes

Question 30

Length of jejunum

Answer 30

Shorter 2/5 of si

Question 31

Length of ileum

Answer 31

Longer (3/5of) si

Question 32

Appearance of jejunum

Answer 32

Dark red (more vascular)

Question 33

Vessels of jejunum

Answer 33

High and less arcades (long terminal branches)

Question 34

Mesenteric fat of jejunum

Answer 34

Small amount and away from intestinal border

Question 35

Lymphoid tissue of jejunum

Answer 35

Few aggregations

Question 36

Diameter of jejunum

Answer 36

Wider

Question 37

Wall of jejunum

Answer 37

Thicker (more plicae circulares)

Question 38

Diameter of Ileum

Answer 38

Narrower

Question 39

Wall of ileum

Answer 39

Thinner (less plicae circulares)

Question 40

Appearance of ileum

Answer 40

Light red (less vascular)

Question 41

Vessels of ileum

Answer 41

Low and more arcades (short terminal branches)

Question 42

Mesenteric fat of ileum

Answer 42

Large amount no close to intestinal border

Question 43

Lymphoid tissue

Answer 43

Numerous aggregations

Question 44

Extent of mesentery of small intestine

Answer 44

From dudeonojejunal flexure to ileocecal junction

Question 45

Formation mesentery of small intestine

Answer 45

2 layers

Question 46

Free border of mesentery of small intestine

Answer 46

Encloses jejunum and ileum

Question 47

Root of mesentery of small intestine

Answer 47

Crosses superficial to the following structures: 1.third part of duodenum 2.abdominal aorta 3.inferior vena cava 4.right psoas major 5.right ureter

Question 48

Content of mesentery of small intestine?

Answer 48

-superior mesenteric artery -superior mesenteric vein -coils of the small intestine -extraperitonal tissue and fat -sympathetic nerve fibers -Mesenteric LN (arranged in three groups: large, medium, and small)