102 - Peritoneum

Question 1

Name for mesentery of the stomach

Answer 1

Omentum

Question 2

Are the aorta and IVC intra- or retroperitoneal?

Answer 2

Retroperitoneal, sitting against the posterior abdominal wall

Question 3

Primary function of mesentery

Answer 3

Connect neurovascular bundles to organs.

Question 4

Secondary function of mesentery

Answer 4

Give mobility to an intraperitoneal structure

Question 5

Nerve supply of the peritoneum

Answer 5

Shares nerve supply of what it overlies. Parietal has somatic innervation. Visceral has visceral innervation.

Question 6

Organs of the most posterior layer of the abdominal cavity 1 2 3

Answer 6

1) Kidneys 2) Adrenals 3) Ureters

Question 7

Second-most posterior layer of organs in the abdominal cavity 1 2 3 4

Answer 7

1) Duodenum 2) Pancreas 3) Bile duct 4) Ascending and descending colon

Question 8

Structure overlying two two most posterior layers of organs in the abdominal cavity

Answer 8

Peritoneum

Question 9

Systems that all abdominal paired viscera belong to

Answer 9

Urogenital and endocrine systems

Question 10

Name for organs that were intraperitoneal initially, but became retroperitoneal during development

Answer 10

Secondarily retroperitoneal

Question 11

Three major mesenteries supporting the intraperitoneal viscera

Answer 11

1) Mesogastrium 2) The mesentery 3) Transverse mesocolon

Question 12

*Arrangement of mesentery in abdomen

Answer 12

Question 13

Components of abdominal mesentery

Answer 13

Greater sack and lesser sack.

Question 14

Lesser sack

Answer 14

Part of the mesentery that lies behind stomach. Continous with the greater sack at the epiploic foramen (of Windslow)

Question 15

Path along which the mesentery travels

Answer 15

Attaches small intestine to the abdominal wall. Starts at the DJ flexure, over 3rd part of duodenum, across aorta, IVC, right psoas, ends at ileocaecal junction

Question 16

Transverse meocolon path

Answer 16

Over front of pancreas, 2nd part of duodenum

Question 17

Sigmoid mesocolon path

Answer 17

A small inverted ‘V’-shape in iliac fossa

Question 18

Lesser omentum path

Answer 18

Connects the stomach to the diaphragm, via the liver

Question 19

Greater omentum path

Answer 19

Starts at greater curvature of the stomach. Folds downwards anteriorally (overlies small intestine). Comes back upwards, connects to the posterior abdominal wall.

Question 20

*Paths of the mesentery, transverse mesocolon and sigmoid mesocolon

Answer 20

Question 21

Main artery supplying the small intestine

Answer 21

Superior mesenteric artery and vein

Question 22

Name for the part of the lesser omentum that connects the stomach and liver

Answer 22

Hepatogastric ligament

Question 23

Free edge of the lesser omentum

Answer 23

Where it stops at the duodenum