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What are the two foregut mesenteries?
1) Dorsal mesentery
2) Ventral mesentery
What is the derivation of the ventral mesentery?
Lateral plate mesoderm - visceral mesoderm
What mesentery is part of the foregut only?
Ventral mesentery
What is the arterial supply, parasym. and sym. supply of the foregut?
Arterial = Celiac Trunk
Parasym. = Vagus Nerve
Sym = Abdominopelvic splanchnic nerve
When does the stomach begin to form from the foregut?
week 4 (28 days)
What two omenta are formed from stomach rotation?
1) lesser omentum
2) greater omentum
When does stomach rotation end?
56 days
When does the lumen of the duodenum solidify?
6 wks (2 months)
When does the lumen of the duodenum open through apoptosis?
wk. 9
What part of the liver do the vitelline veins form?
sinusoids
What 2 parts of the liver does the endoderm of the gut tube form?
Hepatocytes & biliary ducts
What 3 parts of the liver does the septum transversum form?
1) Hematopoietic cells
2) Connective tissue
3) Kupffer cells (macrophages)
What forms into the gallbladder and its associated ducts?
hepatic diverticulum
At what day are two pancreatic buds visible on the hepatic diverticulum?
30
When do the pancreatic buds fuse?
Wk. 6
What is the term for the anomaly of two ventral pancreatic buds wrapping around the diverticulum?
Annular pancreas
What is the arterial supply, parasym. and sym. supply of the midgut?
Arterial = SMA
Parasym = Vagus Nerve
Sym = Abdominopelvic splanchnic nerve
When is the intestinal loop herniated?
wk. 6
When does the intestinal loop begin to retract and when does it finish retracting?
begin = wk. 10
finish = wk. 12
What is the arterial supply, parasym. and sym. supply to the hindgut?
Arterial = IMA
Parasym = Pelvic splanchnic Nerve
Sym = abdominopelvic splanchnic nerve
When does the urorectal septum form and what is its function?
Forms = wk. 7
Function = separate rectum from urogenital sinus
Author
kepling
ID
46737
Card Set
GI System development.txt
Description
H/E Lesson 34 GI System Development
Updated
2010-11-03T01:37:36Z
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