GI Embryology Practice Questions Flashcards
If a newborn male passes pale, clay-like meconium, which of the following developmental abnormalities should be considered?
A) Omphalocele
B) Biliary atresia
C) Meckel’s diverticulum
D) Congenital pyloric stenosis
B) Biliary atresia
If an 80-year-old man has a blockage at the origin of the superior mesenteric artery, the blood supply to which of the following structures is most likely to be compromised?
A) Stomach
B) Liver
C) Ascending colon
D) Sigmoid colon
E) Spleen
C) Ascending colon
Failure of retraction of the midgut in week 10 of development will most likely result in which of the following conditions?
A) Short esophagus
B) Gastroschisis
C) Duodenal stenosis
D) Omphalocele
E) Exstrophy of the bladder
D) Omphalocele
If the blood vessel supplying the hindgut is accidentally damaged during an operation in the pelvis, which of the following structures will be affected?
A) Stomach
B) Appendix
C) Common bile duct
D) Liver
E) Descending colon
E) Descending colon
The liver is formed from which of the following embryonic structures?
A) Splanchnic mesoderm
B) Vitelline veins
C) Gastrointestinal endoderm
D) All of the above
D) All of the above
The following gastrointestinal tract structures does NOT undergo developmental rotation?
A) Stomach
B) Duodenum
C) Ventral pancreatic bud
D) Midgut
E) Hindgut
E) Hindgut
The first stomach rotation causes the ____ and ____ vagus nerves to become the ____ and ____ vagal trunks, respectively.
A) Left; Right; Superior; Inferior
B) Right; Left; Lateral; Medial
C) Left; Right; Lateral; Medial
D) Right; Left; Anterior; Posterior
E) Left; Right; Anterior; Posterior
E) Left; Right; Anterior; Posterior
A two-week old male infant comes into the Emergency Room for weight loss and acute dehydration. The infant has been projectile vomiting and his condition is worsening. Which of the following is the most likely diagnosis?
A) Anal atresia
B) Pyloric stenosis
C) Annular pancreas
C) Intestinal duplication
B) Pyloric stenosis
Which of the following ligaments is a derivative of the dorsal mesentery?
A) Hepatoduodenal
B) Falciform ligament of the liver
C) Gastrorenal
D) Coronary
E) Triangular ligament of the liver
C) Gastrorenal
A six week old baby has a simple columnar epithelium in a portion of their gastrointestinal tract. This would be indicative of which part of the gastrointestinal tracts failure to complete the histological developmental process?
A) Esophagus
B) Stomach
C) Duodenum
D) Colon
E) Rectum
A) Esophagus
