Embryology Flashcards Preview

GI exam #1 > Embryology > Flashcards

Flashcards in Embryology Deck (23):
1

Which TF specifies the esophagus?

SOX2

2

Which TF specifies the duodenum and pancreas?

PDX1

3

Which TF specifies small intestine?

CDXC

4

Which TF specifies large intestine?

CDXA

5

Where does the greater splanchnic nerve come from?

T5-9

6

Where does the lesser splanchnic nerve come from?

T9-12

7

Where does the least splanchnic nerve come from?

T12-L2

8

What happens when the vitelline duct stays open?

Meckel's diverticulum

9

What does atresia mean?

when it's completely blocked off

10

when the stomach rotates what do the left and right vagus nerves become?

anterior and posterior vagal trunks

11

What insctructs the gut endoderm to express liver specific genes?

FGF2 in the cardiac mesoderm and BMPs secreted by the septum transversum

12

What are the sinusoids of the liver made out of?

vitelline vessels

13

What was the ligamentum teres hepatis?

the left umbilical vein

14

Menkes disease

cells cant absorb copper---> kinky hair

15

Wilson's disease

copper is not eliminated properly and instead accumulates (fleischer ring in the eyeball)

16

What TF is involved with cells secreting insulin, somatostatin, and pancreatic polypeptide?

PAX4

17

Which TF is involved with cells secreting glucagon?

PAX6

18

What does volvulus mean?

abnormal twisting of the intestine causing obstruction

19

What does intussusception mean?

The enfolding of one segment of the intestine within another

20

What is Gastroschisis?

failure of anterior abdominal wall musculature to close during folding
*in this one, the gut contents are not surrounded by membrane

21

What is an omphalocele?

where the midgut loop fails to return to abdominal cavity

22

Prune belly syndrome?

where the anterior abdominal wall musculature is deficient or absent

23

Hirschsprung's disease

motor disorder of the colon that causes a functional intestinal obstruction
-both plexuses are affected... no parasympathetic innervation means no peristalsis