Abdominal viscera protruding embryo mcq step 1?
A 28-year-old woman who had no prenatal care gives birth at 42 weeks' gestation. The newborn have some of its abdominal viscera protruding through a defect in the abdominal wall. Which of the following is the likely end in of this defect?
A. Failure of the intestinal loop to retract from the umbilical cord
B. Failure of the yolk stalk to degenerate
C. Failure of peritoneal fusion
D. Incomplete fusion of the lateral body folds
E. Umbilical herniation
Answers:
Read this: (it's not easy reading) It tell of the pathogenesis of gastroschisis and omphalocele.
http://emedicine.medscape.com/article/97…
I'd go with B, based on this: "Rather than investing the yolk sac and body stalk centrally at the umbilicus, the amnion remains attached to the margins of the body wall irregularity, creating a persistent communication between the intraembryonic body cavity and the extraembryonic coelom."
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A. Failure of the intestinal loop to retract from the umbilical cord
B. Failure of the yolk stalk to degenerate
C. Failure of peritoneal fusion
D. Incomplete fusion of the lateral body folds
E. Umbilical herniation
Answers:
Read this: (it's not easy reading) It tell of the pathogenesis of gastroschisis and omphalocele.
http://emedicine.medscape.com/article/97…
I'd go with B, based on this: "Rather than investing the yolk sac and body stalk centrally at the umbilicus, the amnion remains attached to the margins of the body wall irregularity, creating a persistent communication between the intraembryonic body cavity and the extraembryonic coelom."
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