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Which is a result of failure of proper lateralization of the gut during
development?

a) Waardenburg-Shah Syndrome

b) Hirschsprung Disease

c) Lactose intolerance

d) Polysplenia
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==Answer==
Answer d. Both Waardenburg-Shah Syndrome and Hirschsprung disease are
caused by impaired neural development. Lactose intolerance is due to late
activation of the enzyme lactase. Polysplenia results from failure of proper
lateralization during embryonic development and subsequent situs inversus.
==Notes==
<references />
:This question originally printed in the [http://www.amazon.com/Justin-L.-Lockman/e/B00FLG5AEE/ref=ntt_dp_epwbk_0 Pediatric Anesthesiology Review Topics] kindle book series, and appears courtesy of Naerthwyn Press, LLC.
==Keywords==
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