Peritoneum

Question 1

Compare and contrast Visceral and Parietal peritoneum

Answer 1

Compare: both are supplied by the same nerve/blood vessel as the organ/region of the wall they surround

Contrast: visceral does NOT feel pain, parietal does

• visceral lines the organs, parietal lines the body wall
• visceral is sensitive to stretch/chemical irritation, parietal is sensitive to pain, pressure, temperature

Question 2

What is the difference between intra and retro peritoneal?

Answer 2

1. intra is mostly covered with visceral and can move a bit

2. retro is outside the peritoneal cavity and is only partially covered with peritoneum, and is not able to move

Question 3

SAD PUCKER

Answer 3

S= superior renal glands
A= aorta/IVC (1)
D= 2-4 duodenum (2)

P= pancreas (all but tail) (2)
U= ureters (1)
C= A/D colon (2)
K= kidney (1)
E= esophagus
R= rectum

Question 4

What two ligaments make up the lesser omentum?

Answer 4

hepatoduodenal and hepatogastric

*both are ventral mesentery (Falciform L. is VM too)

Question 5

What mesentery does the splenorenal L come from? gastrosplenic L?

Answer 5

both are from dorsal mesentery

Question 6

What ligaments are in the greater omentum?

Answer 6

gastrocolic, gastrosplenic, gastrophrenic

Question 7

Arteries in the hepatoduodenal L

Answer 7

proper hepatic, cystic, right gastric

Question 8

Arteries in the hepatogastric L

Answer 8

right and left gastric

Question 9

Arteries in the gastrophrenic L

Answer 9

posterior gastric

Question 10

Arteries in the gastrosplenic L

Answer 10

short gastric, left gastroepiploic (gastroomental)

Question 11

Arteries in the gastrocolic L

Answer 11

left and right gastroomental

Question 12

Arteries of the mesentery

Answer 12

ileo, jejunal, SMA

Question 13

Arteries of the root of the mesentery

Answer 13

ileocolic

Question 14

Arteries of the Sigmoid Mesocolon

Answer 14

sigmoid

Question 15

How does the lesser sac communicate with the greater sac? its boundaries

Answer 15

Epiploic foramen (mental foramen) -

anterior: hepatoduodenal L and portal triad
posterior: right crus of diaphragm/IVC
superior: caudate lobe of the liver
inferior: first part of duodenum

*site of pringle maneuver

Question 16

Why is a posterior stomach rupture better than anterior? what’s best for the pancreas?

Answer 16

1. because contents are confined within the lesser sac

2. anterior because that’s where it goes to the lesser sac

Question 17

What two compartments does the transverse mesocolon divide into? what organs do they contain? how do the compartments talk?

Answer 17

1. Supracolic - stomach, liver, spleen
2. Infracolic - SI, A/D colon
3. Paracolic gutters

Question 18

What are the lowest pouches men/women can have fluid accumulate?

Answer 18

men - retrovesicular pouch

women - retrouterine such

Question 19

What is anterior to the pancreas? posterior? inferior? right? left?

Answer 19

1. lesser sac and stomach
2. Aorta, IVC, splenic vein, bile duct, right crus of the D, left kidney and vessels, left suprarenal gland, SMA/V
3. 3rd part of duodenum
4. 2nd part duodenum
5. spleen