How many muscle layers are present in the stomach's muscularis externa?
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Correct answer: Three
The stomach has three layers in its muscularis externa: inner oblique, middle circular, and outer longitudinal. These layers allow powerful churning movements during digestion.
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More Stomach Histology questions
- Which unique muscle layer distinguishes the stomach from most other parts of the gastrointestinal tract?
- Which stomach cells secrete hormones such as gastrin?
- Which structure forms folds in the stomach mucosa that allow expansion?
- Which stomach cell type has abundant mitochondria to support acid secretion?
- Which structure separates the mucosa from the submucosa in the stomach?
- Which stomach cell type plays a role in regenerating the gastric epithelium?