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Flashcards in Gastrointestinal Development Deck (65)
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1

Most common congenital GI anomaly

Intestinal obstruction

2

When does part of inestines herniate out and back in ?

Week 6-10

3

Foregut

Esophagus
Stomach
Proximal duodenum
Pancreas
Liver
Biliary system

4

Midgut

Distal duodenum
Most small intestine
Cecum
Appendix
Ascending colon
Right 1/2 of tvs colon

5

Hindgut

Distal 1/2 tvs colon
Descending colon
Sigmoid colon
Rectum
Superor part of anal cnaal

6

Gut tube formed by

Incorporation of dorsal yolk sac into embryo

7

Gut tube extends from

oropharyngeal to cloacal membrane

8

Vitelline duct

Connects yolk sac to midgut

9

Celiac artery supplies

Foregut except pharynx, resp tract, and intra-thoracic esophagus

10

Mid gut supply

Suprior mesenteric artery

11

Hindgut supply

Inferior mesenteric

12

Parasympathetic innervation of gut

Vagus nerve innervates foregut and midgut
Pelvic splanchnis innervates hindgut (S2-S4)

13

Foregut derivatives

Pharynx and deriv
Lower resp
Esophagus and stomach
Duodenum (superior half)
Liver, biliary, and pancreas

14

Stomach formation

Dorsal stomach wall becomes greater curvature
Ventral stomach wall becomes lesser curvature
From caudal foregut

15

Stomach rotates how?

Clockwise
Left becomes ventral and right becomes dorsal

16

Ventral wall/dorsal wall of stomach innervation

Left vagus - ventral
Right vagus - dorsal

17

How is stomach suspended from dorsal and ventral ab walls

Mesogastrium (dorsal and ventral mesenteries)

18

Dorsal mesogastrium becomes

Greater omentum

19

Rotation of dorsal mesogastrium forms

OMental bursa (lesser sac)

20

Ventral mesogastrium becomes

Lesser omentum

21

Pyloric stenosis

Thickening of smooth muscle in pyloric region of the stomach
Prevents food from emptying properly into duodenum

22

Duodenum formed from

Caudal foregut and cranial midgut

23

Where does common bile duct attach?

Junction of foregut and midgut

24

Rotation of stomach rotates duodenal loop

To the right and pushes pancreas and udodenum into retroperitoneal postion

25

Duodenal stenosis

When lumen narrowed as a result of failed recanalization
Vomiting

26

Duodenal atresia

When lumen is occuded
Associated with other severe conditions
Double bubble

27

Pancreas formed from

Foregut endoderm
Dorsal and ventral pancreatic buds between layers of mesenter y

28

Duodenal rotation moves what parts of pancreas

Ventral pancreatic bud posterior to the dorsal bud and fuses

29

Ventral pancreatic bud becomes what part of pancreas?

Head, uncinate, and most of main duct

30

Dorsal bud forms

Rest of pancreas