Deck 10: Digestive System

Question 1

________ Duodenal obstruction

A)Pyloric stenosis
B)Anorectal agenesis
C)Esophageal atresia
D)Omphalocele
E)Polyhydramnios

Answer 1

E
High intestinal obstruction (e.g.,duodenal atresia)frequently is an accompaniment of polyhydramnios.Excessive amniotic fluid is also associated with meroanencephaly (partial absence of the brain)and esophageal atresia.With meroanencephaly,there appears to be difficulty in swallowing.In esophageal and duodenal atresia,amniotic fluid accumulates because it is unable to pass to the intestines for absorption.

Question 2

________ Forms the major part of the pancreas

A)A
B)B
C)C
D)D
E)E

Answer 2

D
The dorsal pancreatic bud forms the major part of the pancreas;the inferior part of the head of the pancreas and the uncinate process are derived from the ventral pancreatic bud.The main pancreatic duct forms by fusion of the ducts of both pancreatic buds.

Question 3

________ Arises as a diverticulum of the foregut

A)A
B)B
C)C
D)D
E)E

Answer 3

D
The liver arises as a diverticulum from the caudal end of the foregut.The proliferating endodermal cells give rise to interlacing cords of cells,which become the liver parenchyma.The fibrous and hematopoietic tissue are derived from splanchnic mesenchyme.

Question 4

________ Faulty partitioning of the cloaca

A)Pyloric stenosis
B)Anorectal agenesis
C)Esophageal atresia
D)Omphalocele
E)Polyhydramnios

Question 5

________ Penetrates the septum transversum

A)A
B)B
C)C
D)D
E)E

Question 6

________ Partly derived from the midgut

A)A
B)B
C)C
D)D
E)E

Question 7

________ Supplies foregut derivatives

A)Spleen
B)Omphaloenteric duct (yolk stalk)
C)Gallbladder
D)Appendix
E)Celiac trunk

Question 8

________ Organ derived solely from mesenchyme

A)Spleen
B)Omphaloenteric duct (yolk stalk)
C)Gallbladder
D)Appendix
E)Celiac trunk

Question 9

________ Derived from foregut

A)Spleen
B)Omphaloenteric duct (yolk stalk)
C)Gallbladder
D)Appendix
E)Celiac trunk

Question 10

________ Forms the inferior part of the head of the pancreas

A)A
B)B
C)C
D)D
E)E

Question 11

________ Embryonic site of hematopoiesis

A)A
B)B
C)C
D)D
E)E

Question 12

________ Its free border contains the umbilical vein

A)A
B)B
C)C
D)D
E)E

Question 13

________ Faulty partitioning of the foregut

A)Pyloric stenosis
B)Anorectal agenesis
C)Esophageal atresia
D)Omphalocele
E)Polyhydramnios

Question 14

________ Continuous with the apex of the midgut loop

A)Spleen
B)Omphaloenteric duct (yolk stalk)
C)Gallbladder
D)Appendix
E)Celiac trunk

Question 15

________ Causes projectile vomiting

A)Pyloric stenosis
B)Anorectal agenesis
C)Esophageal atresia
D)Omphalocele
E)Polyhydramnios

Question 16

________ Derived from the foregut and midgut

A)A
B)B
C)C
D)D
E)E

Question 17

________ Herniation of the intestines

A)Pyloric stenosis
B)Anorectal agenesis
C)Esophageal atresia
D)Omphalocele
E)Polyhydramnios

Question 18

________ Derived from the midgut loop

A)Spleen
B)Omphaloenteric duct (yolk stalk)
C)Gallbladder
D)Appendix
E)Celiac trunk

Question 19

________ Hepatoduodenal ligament

A)A
B)B
C)C
D)D
E)E

Question 20

________ Primarily involved in extrahepatic biliary atresia

A)A
B)B
C)C
D)D
E)E