new_n_lost
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The greater omentum is derived from which of the following embryonic structures?
A. Dorsal mesoduodenum
B. Dorsal mesogastrium
C. Pericardioperitoneal canal
D. Pleuropericardial membranes
E. Ventral mesentery
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| SILVER
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B. Dorsal mesogastrium
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| forumdoctor
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B
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| new_n_lost
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| new_n_lost
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The correct answer is B.
Both the omental bursa and the greater omentum are derived from the dorsal mesogastrium, which is the mesentery of the stomach region.
The dorsal mesoduodenum (choice A) is the mesentery of the developing duodenum, which later disappears so that the duodenum and pancreas come to lie retroperitoneally.
The pericardioperitoneal canal (choice C) embryologically connects the thoracic and peritoneal canals.
The pleuropericardial membranes (choice D) become the pericardium and contribute to the diaphragm.
The ventral mesentery (choice E) forms the falciform ligament, ligamentum teres, and lesser omentum.
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FORUM RULES-- Those who believe in telekinesis, raise my hand. I get enough exercise just by pushing my luck --P4U World.." The pure and simple truth is rarely pure and never simple."
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