106b anatomy of the abdomen

Question 1

what forms the mesenteries?

Answer 1

splanchnopleure/visceral peritoneum

Question 2

morphology of mesenteries?

Answer 2

simple squamous epi

Question 3

in the embryo, where is the liver in relation to the stomach? the spleen?

Answer 3

liver and gall bladder is ventral

spleen is dorsal

Question 4

which ventral mesenteries/lesser omentum break down? what does this form?

Answer 4

midgut and hindgut

greater peritoneal sac (abdominal cavity)

Question 5

meckel’s diverticulum

Answer 5

blind sinus with all 3 gut wall laters (mucosa, submucosa, muscularis externa) that is attached to umbilicus via a fibrous cord

Question 6

what forms the lesser peritoneal sac (aka omental bursa)?

Answer 6

dorsal mesentery/dorsal mesogastrium/greater omentum to the left as the stomach and liver rotates right

Question 7

what is the communicaiton between the lesser and great sacs?

Answer 7

epiploic foramen of winslow

Question 8

Falcifrom

1) connects
2) structures contained
3) notes

Answer 8

1) connects: liver and anterior ab wall
2) structures contained = ligamentum teres hepatis
3) notes - from ventral mesentery

Question 9

hepatoduodenal

1) connects
2) structures contained
3) notes

Answer 9

1) connects = liver and duodenum
2) structures contained = portal triad (hepatic artery, portal vein, common bile duct)
3) notes = connects greater and lesser sacs; from lesser omentum

Question 10

hepatogastic

1) connects
2) structures contained
3) notes

Answer 10

1) connects = liver and lesser curve of stomach
2) structures contained = gastric arteries
3) notes = seperates greater and lesser sacs on right, cut to access lesser sac; from lesser omentum

Question 11

gastrocolic

1) connects
2) structures contained
3) notes

Answer 11

1) connects= greater curve and trasnverse colon
2) structures contained = gastroepiploic arteries
3) notes = part of greater omentum; adhesion

Question 12

gastrosplenic

1) connects
2) structures contained
3) notes

Answer 12

1) connects= greater curve and spleen
2) structures contained
3) notes = seperates greater and less sac on left

Question 13

splenorenal

1) connects
2) structures contained
3) notes

Answer 13

1) connects= spleen and posterior ab wall
2) structures contained= spelnic artery and vein; tail of pancreas
3) notes

Question 14

what is formed from the ventral mesogastrium?

Answer 14

falciform ligament
coronoary ligament
lesser omentum (heptogastric and hepatoduodenal)

Question 15

what is formed from the dorsal mesogastrium?

Answer 15

greater omentum
gastosplenic ligament
splenorenal ligament

Question 16

what are the retroperitoneal structures? (These are superficial to the parietal peritoeneum)

Answer 16

SAD PUCKER
Suprarenal (adrenal) gland
Aorta and IVC
**Duodenum (2nd and 3rd parts)
**Pancreases (except tail)
Ureters + Bladder
**Colon (descending and ascending)
Kidneys
Esophagus (lower 2/3rds)
Rectum (lower 2/3rds)
**=secondarily retroperitoneal from fusion of greater omentum