Development of the GI Tract Flashcards
1
Q
At how many weeks gestation is meconium found in the foetal gut?
A
14 weeks
2
Q
The GI tract is derived from which layer of the trilaminar disc?
A
Endoderm
3
Q
How is the midgut connected to the yolk sac?
A
Vitelline duct (a.k.a Vitello-intestinal duct)
4
Q
What is the innervation to the foregut?
A
T5-T9
5
Q
What is the innervation to the midgut?
A
T10-T11
6
Q
What is the innervation to the hindgut?
A
T12- L1
7
Q
Regarding Meckel’s diverticulum, what is the rule of 2s?
A
2% of the population
2 inches long
2 feet away from the ileocaecal valve
8
Q
During midgut herniation and rotation, how many turns are made and in which direction?
A
3 x 90 anticlockwise turns
9
Q
When does physiological herniation occur?
A
6th week
10
Q
When does the foetus start swallowing?
A
12 weeks
