GI Embryology

Question 1

Foregut consists of?

Answer 1

pharynx to duodenum.

Question 2

Midgut consists of?

Answer 2

duodenum to proximal 2/3 of

transverse colon

Question 3

Hindgut consists of?

Answer 3

distal 1/3 of transverse colon to anal

canal above pectinate line.

Question 4

In Omphalocele, gastroschisis what fails to close?

Answer 4

Lateral fold closure

Question 5

What is the GI Problems in trisomy 21?

Answer 5

Duodenal Atresia

Question 6

At what week does midgut herniates through

umbilical ring?

Answer 6

6th week

Question 7

Returns to abdominal cavity +

rotates around superior mesenteric artery? at what week?

Answer 7

10th week

Question 8

MC Tracheoesophageal anomalies?

Answer 8

Esophageal atresia (EA) with distal tracheoesophageal fistula (TEF)

Question 9

Drooling, choking, and vomiting with first feeding and failure to pass nasogastric tube into stomach? What is this?

Answer 9

Esophageal atresia (EA) with distal tracheoesophageal fistula (TEF)

Question 10

Male infant with Nonbilious projectile vomiting at ≈ 2–6 weeks old with palpable “olive” mass in epigastric region?

Answer 10

Congenital pyloric stenosis

Question 11

Congenital pyloric stenosis MOA?

Answer 11

Hypertrophy of the pylorus causes obstruction

Question 12

Pancreas derives from?

Answer 12

foregut

Question 13

Ventral buds make?

Answer 13

uncinate process and main pancreatic duct.

Question 14

ventral pancreatic bud abnormally encircles 2nd part of duodenum?

Answer 14

annular pancreas

Question 15

Spleen is from? But Supplied by?

Answer 15

mesentery of stomach (hence is mesodermal)

Celiac Trunk

Question 16

early bilious vomiting with proximal stomach distention (“double bubble” on X-ray)?

Answer 16

Duodenal atresia