GI Topography and Embryology

Question 1

Main Artery of the Foregut

Answer 1

Celiac Trunk

Question 2

Main Organs of the Foregut

Answer 2

Liver, Pharynx, Esophagus, Stomach, 1st Half Duodenum, Gallbladder, Pancreas

Question 3

Innervation of the Foregut

Answer 3

Vagus

Question 4

Main Artery of the Midgut

Answer 4

Superior Mesenteric Artery

Question 5

Main Innervation of the Midgut

Answer 5

Vagus

Question 6

Main Organs of the Midgut

Answer 6

2nd Half Duodenum, Jejunum, Ileum, Cecum, Ascending Colon, Right 2/3 of Transcending colon

Question 7

Main Organs of Hindgut

Answer 7

1/3 Transverse Colon, Descending Colon, Sigmoid Colon, Rectum

Question 8

Main Artery of Hindgut

Answer 8

Inferior Mesenteric Artery

Question 9

Main Nerve of Hindgut

Answer 9

Pelvic Splanchnic

Question 10

Which embryonic structure gives rise to the peritoneal cavity?

Answer 10

intraembryonic cavity

Question 11

What embryonic structure forms the dorsal mesentery?

Answer 11

Yolk Sac

Question 12

Which embryonic structure will become the greater omentum?

Answer 12

Dorsal mesentery

Question 13

Which embryonic limb of intestine will ultimately become the small intestine?

Answer 13

Cranial Limb
(Returns to abdomen first, roughly 10-12 weeks)

Question 14

What is Meckel’s diverticulum?

Answer 14

Outpouching of the ileum 2 ft proximal to ileocecal junction, out pocketing of embryonic yolk stalk

Question 15

What is vovulus?

Answer 15

A rotation and constriction of the intestine.