Peritoneum

Question 1

Subdivisions of alimentary canal

Answer 1

Stomodeum 
Foregut 
Midgut
Hindgut 
Proctodeum

Question 2

2 mesentries

Answer 2

Ventral

Dorsal

Question 3

Mesogastria and nearby ligaments

Answer 3

Dorsal / ventral mesogastrium 
Splenorenal ligament 
Gastrosplenic ligament 
Gastrohepatic ligament 
Falciform ligament

Question 4

Growth and rotation of stomach

Answer 4

Has right /left vagus; ventral and dorsal mesentries

Does a clockwise rotation

Question 5

Movement of mesentries during development

Answer 5

Stomach rotates clockwise-> dorsal mesentries moves left and expands-> partly fuses to posterior wall
Duodenum swings right and fuses to body wall
-> restricted opening formed in ventral mesentry called epiploic foramen

Question 6

Significance of epiploic foramen

Answer 6

Connects greater and lesser sacs

Question 7

Origins of greater and lesser omentum

Answer 7

Greater: dorsal mesentries, from greater curvature or stomach
Lesser: ventral mesentries, from lesser curvature

Question 8

Level of epiploic foramen and bare area of liver

Answer 8

Epiploic: t12

Bare area: above t12

Question 9

Intestinal mesentries

Which part of Jejunum that retains mesentry

Answer 9

Transverse mesocolon
The mesentry
Sigmoid mesocolon
First 1/2 of jejunum has mesentry

Question 10

Formation of greater omentum

Answer 10

Dorsal mesentery attaches stomach to pancreas to posterior wall
O mental bursa hangs over transverse colon
Transverse colon suspended by transverse mesocolon
Omental bursa continues to dip-> greater omentum
Fusion of transverse mesocolon and dorsal mesentery into transverse mesocolon
Greater omentum is part of lesser sac
Gastrocolic ligament formed from fusion