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The stomach wall is divided into four layers: layer, submucosa layer, muscle layer and serosa layer.
The stomach wall is divided into four layers: layer, submucosa layer, muscle layer and serosa layer.
正确答案：mucosa
标签：
动物解剖生理
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The concave edge of the stomach is called the lesser curvature, the convex edge called the curvature.
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The mucosa of pig stomach glandular part containing glands, There are many depressions formed on the surface, called the gastric pits which is the of gastric gland.