NBME CBSSA Practice Questions - NBME Comprehensive Basic Science Self-Assessment Exam

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A newborn has bilious vomiting during the first day of life. Radiography shows air in the stomach and proximal duodenum with no distal bowel gas. Which embryologic process failed?

Physiologic herniation of the midgut into the umbilical cord Recanalization of the duodenal lumen Migration of neural crest cells into the distal colon Rotation of the midgut around the superior mesenteric artery

Correct Answer:

Recanalization of the duodenal lumen

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