GIT and associated organs Flashcards
1
Q
what is the gut tube formed from?
A
endoderm
2
Q
what are the organs of the endoderm?
A
- epithelium of mucosa
- associated ducts and glands
3
Q
what are the origins of the visceral mesoderm?
A
- lamina propria
- muscularis mucosa and muscular externa
- CT of submucosa and External CT
4
Q
what are free origins of the neural crest?
A
- enteric nervous system
- Meissner’s plexus present by week 8
- Auerbach’s plexus present by week 12
5
Q
what is involved in the ventral mesenteries?
A
- lesser omentum
- falciform ligament
6
Q
what is involved in the dorsal mesenteries?
A
- dorsal mesogastrium
- dorsal mesoduodenum
- dorsal mesocolon
7
Q
what is the meissner’s plexus in relation to the neural crest?
A
small aggregation of ganglion cells located in the submucosa of the intestine
8
Q
what is the Auerbach’s plexus in relation to the neural crest?
A
enteric NS. responsible for peristaltic movement
