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What are the embryonic origins of the layers in the GIT?

April 26, 2017embryonic git layers origins

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What are the embryonic origins of the layers in the GIT?

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The gastrointestinal tract (GIT) epithelial lining, including its glands, is endoderm in origin. It is surrounded connective tissue, muscle, blood vessels are splanchnic mesoderm in origin, which formed from the portion of lateral plate mesoderm closest to the endoderm and beneath the intraembryonic coelom. The 2 neural plexuses muscularis mucosa (= Meissner) and myenteric (= Auerbach) are neural crest in origin.