Embryology of GI tract Flashcards
The epithelium of the mucosa in the GI tract develops from the _ (germ layer)
Endoderm
The lamina propria of the mucosa develops from the _
Visceral mesoderm
Both the muscularis mucosa & muscularis externa develop from the _
Visceral mesoderm
Associated ducts and glands of the GI tract develop in the _
Endoderm
Emrbryological Mesenteries of the gut can be divided into ventral and dorsal. What are the two Ventral mesentries of the gut?
- Falciform ligament 2. Lesser omentum
What are the 3 dorsal mesenteries of the gut?
- Dorsal mesogastrium 2. Dorsal mesoduodenum 3. Dorsal mesocolon
The rotation of different parts of the gut bring the mesenteries into their final positions. T/F?
True
What are the important changes that take place in the stomach?
- Dilation of caudal part of foregut
- Dorsal border grows rapidly- greater & lesser curvature forms
- 90 degree rotation taks
Growth and rotation of the stomach causes the formation of the _ sac
Lesser
Continued growth of the dorsal mesentery leads to the _
Greater omentum
Parts 1 & 2 of the duodenum are formed from the _ portion of the foregut
Caudal
Parts 3 & 4 of the duodenum are formed from the cranial part of the _
Midgut
Liver bud grows into the mesoderm of _ _
Septum Transversum
Rotation of the pancreas does not take place during its development. T/F?
False- does
The spleen is an endoderm derivative. T/F?
False- mesoderm
