17.1 to 17.3

Question 1

Name the 3 distinctive regions of the small intestine?

Answer 1

i DJ

• ileum
• duodenum
• jejunum

Question 2

Whats the extent of the small intestine?

Answer 2

Pylorus of stomach to the ileocecal unction.

Question 3

The first part of the small intestine is the?

Answer 3

Duodenum

Question 4

Where is a major site for absorption and absorption of nutrients?

Answer 4

Small intestine

Question 5

What’s the widest and most fixed part of the small intestine?

Answer 5

Duodenum

Question 6

Name the parts of the Duodenum?

Answer 6

Superior
Descending
Inferior
Ascending

Question 7

The small intestine is how long?

Answer 7

7 meters

Question 8

The convexity of the Duodenum is facing to the?

Answer 8

right side

Question 9

concavity of the duodenum is facing to the?

Answer 9

left side

Question 10

The superior part (first part) of the duodenum is how long? and lies anterolateral to the body of the ?

Answer 10

short/(5cm)
L1 vertebra

Question 11

The descending (second) part of the duodenum is how long? and descends along the right sides of the?

Answer 11

longer (7-10cm)
L2 and L3 vertebrae

Question 12

Important posterior relation of the superior part of the duodenum is ?

Answer 12

G D A
Gastroduodenal Artery

Question 13

Gastroduodenal Artery may erode and cause what?

Answer 13

bleeding in the posterior wall “perforated ulcer”

Question 14

The first 2cm of the superior part of the duodenum is?

Answer 14

• intraperitoneal and has mesentery.
• distal 3cm is retroperitoneal.

Question 15

Most duodenal ulcers are seen in which part of the duodenum?

Answer 15

1st part of duodenum.

Question 16

The descending part of the duodenum contain?

Answer 16

• major duodenal papilla (common opening for bile and major pancreatic duct)
• minor duodenal papilla (entrance of accessory pancreatic duct)

Question 17

The inferior part of the duodenum is how long? and is crossed by?

Answer 17

• 6 - 8 cm, L3 Vertebra, retroperitoneal
• SMA (superior mesenteric artery) and vein

Question 18

In severe abdominal injuries, which part of the duodenum may be crushed against the L3 vertebra?

Answer 18

The inferior part.

Question 19

The ascending part of the duodenum is how long? and begins at?

Answer 19

• 5cm
• at the left of L3 vertebra and rises superiorly till L2 vertebra

Question 20

Duodeno-jejunal flexure is surrounded by a fold of peritoneum containing muscle fibers and connective tissue called?

Answer 20

suspensory ligament of Treitz

Question 21

What is the demarcation b/w the foregut and the midgut?

Question 22

The first part of the duodenum receives the?

Answer 22

Chyme “which is acidic”.

Question 23

First part of duodenum is prone to what type of ulcer?

Answer 23

gastric ulcer

Question 24

If there is gastric ulcer in the 1st part of the duodenum it can lead to?

Answer 24

erosion to the duodenum (1st part) GDA gastroduodenal artery which can lead to hemorrhage.

Question 25

Ruptured posterior duodenal wall ulcer?

Answer 25

gastroduodenal artery

Question 26

Ruptured gastric ulcer on lesser curvature of stomach?

Answer 26

left gastric artery

Question 27

Duodenal ulcer seen in the 1st part can erode

Answer 27

liver, gall bladder and pancreas in its vicinity "pancreatitis".

Question 28

What is seen under diaphragm when there is a ruptured duodenal ulcer?

Answer 28

air, with referred pain to shoulder.

Question 29

Memorize this diagram

Question 30

Arterial supply, up to the major duodenal papilla is?

Answer 30

Superior pancreaticoduodenal artery, branch of gastroduodenal artery (celiac trunk).

Question 31

Arterial supply, below the major duodenal papilla is?

Answer 31

Inferior pancreaticoduodenal artery (branch of superior mesenteric artery)

Question 32

For duodenum, venous drainage is

Answer 32

Hepatic portal vein through superior mesenteric and splenic veins.

Question 33

For duodenum, Lymphatic drainage is

Answer 33

Anterior lymphatic vessels drain into pancreaticoduodenal lymph nodes and into pyloric nodes. Posterior lymphatic vessels drain into superior mesenteric lymph nodes.

Question 34

Length of jejunum & ileum?

Answer 34

7 meters (jejunum forms proximal 2/5th)

Question 35

Where does jejunum begin?

Answer 35

It begins at duodenojejunal junction and ileum ends at ileocecal junction.

Question 36

What attaches the jejunum and ileum to the posterior abdominal wall?

Answer 36

Mesentery

Question 37

Jejunum and ileum, arterial supply is from

Answer 37

superior mesenteric artery. Arteries unite to form arterial arcades that give rise to straight arteries (vasa recta)

Question 38

Venous drainage for jejunum and ileum?

Answer 38

Superior mesenteric vein which joins with splenic vein to form portal vein.

Question 39

When you think about quadrants of abdomen, where do you find jejunum?

Answer 39

L U Q Left upper quadrant

Question 40

When you think about quadrants of abdomen, where do you find ileum?

Answer 40

R L Q Right lower quadrant

Question 41

Broad fan shaped fold of peritoneum which suspends jejunum and ileum from the posterior abdominal wall and conveys nutrition and innervation to the small gut?

Answer 41

the mesentery

Question 42

The mesentery presents how many borders? name them?

Answer 42

- 2 - Vertebral border - root - Intestinal border or free border

Question 43

"the mesentery" Name the 6 structures crossed by the root

Answer 43

- third part of duodenum - abdominal aorta - inferior vena cava - right ureter - right psoas major muscle - right sacro-iliac joint

Question 44

Jejunum walls are?

Answer 44

thicker and more vascular

Question 45

Walls of ileum are?

Answer 45

Thinner and less vascular

Question 46

Lumen of jejunum is ?

Answer 46

wider and often empty

Question 47

Lumen of ileum is?

Answer 47

narrow, often loaded

Question 48

Circular folds in jejunum is?

Answer 48

larger, thick and closely set.

Question 49

circular folds in ileum is ?

Answer 49

smaller, sparse

Question 50

villi in jejunum is?

Answer 50

tall, leaf like

Question 51

villi in ileum is ?

Answer 51

short, finger like

Question 52

Peyer patches (lymphoid nodules) in jejunum is

Answer 52

absent

Question 53

Peyer patches (lymphoid nodules) in ileum is ?

Answer 53

present

Question 54

Fat distribution in the mesentery of of jejunum is ?

Answer 54

less

Question 55

Fat distribution in the mesentery of ileum is?

Answer 55

Abundant

Question 56

Learn the diagram

Question 57

Mimics the symptoms of acute appendicitis?

Answer 57

Meckel diverticulum Also read the image attached

Question 58

Answer the question

Answer 58

B

Question 59

Answer the question

Answer 59

A