Small Intestine

Question 1

Length of duodenum

Answer 1

10 inches

25 cm

Question 2

parts of the duodenum

Answer 2

1st - superior
2nd - descending
3rd - horizontal
4th - ascending

Question 3

Characteristic of Superior part of duodenum

Answer 3

5 cm

lies anterolateral to the body of L1

Question 4

Characteristic of Descending part of duodenum

Answer 4

7 to 10 cm

descends along the right side of L1 to L3

Question 5

Characteristic of Horizontal part of duodenum

Answer 5

6 to 8 cm

crosses L3

Question 6

Characteristic of Ascending part of duodenum

Answer 6

5 cm

begins at L3 rises superiorly to L2

Question 7

Relationships of 2nd part of duodenum

Answer 7

laterally - right colic flexure
medially
1. head of pancreas
2. anastomoses of superior and inferior pancreaticoduodenal vessels
3. bile duct and main pancreatic duct

Question 8

Blood supply of duodenum

Answer 8

Upper - superior pancreaticoduodenal from gastroduodenal

Lower - inferior pancreaticoduodenal from SMA

Question 9

Venous drainage of duodenum

Answer 9

1. superior pancreaticoduodenal - drains into portal vein

2. inferior pancreaticoduodenal - drains into SMV

Question 10

Common location of duodenal ulcer

Answer 10

anterior wall first part of duodenum

Question 11

What artery causes bleeding of gastric ulcer

Answer 11

left gastric artery

Question 12

what artery causes bleeding of duodenal ulcer

Answer 12

gastroduodenal artery

Question 13

What segment of duodenum can ligament of trietz be found

Answer 13

4th segent

ascending segment

Question 14

length of jejunum and ileum

Answer 14

20 ft

6 meters

Question 15

Location of jejunum

Answer 15

LUQ

Question 16

Location of ileum

Answer 16

RLQ

Question 17

Blood supply of jejunu and ileumm

Answer 17

jejuna - ileal arteries from SMA

formation of arterial arcades and vasa recta