In the esophagus, which muscular layer is present just beneath the mucosa?

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Prepare for the Epithelial Tissue Structure and Function Test. Explore with multiple choice questions and explanations. Master epithelial tissue concepts for your exam success!

Multiple Choice

In the esophagus, which muscular layer is present just beneath the mucosa?

Explanation:
The mucosa sits above a thin sheet of smooth muscle called the muscularis mucosae. This is present in the esophagus and lies directly beneath the mucosa, forming a boundary with the underlying submucosa. The muscularis mucosae moves the mucosal folds, helping with contact between the mucosa and the lumen contents and aiding local secretions and sensing. Deeper lies the muscularis externa, the thicker muscle layer responsible for peristaltic movement, and the oblique muscle layer is a feature of the stomach, not the esophagus.

The mucosa sits above a thin sheet of smooth muscle called the muscularis mucosae. This is present in the esophagus and lies directly beneath the mucosa, forming a boundary with the underlying submucosa. The muscularis mucosae moves the mucosal folds, helping with contact between the mucosa and the lumen contents and aiding local secretions and sensing. Deeper lies the muscularis externa, the thicker muscle layer responsible for peristaltic movement, and the oblique muscle layer is a feature of the stomach, not the esophagus.

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