The innermost layer of the esophagus is called the:

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The innermost layer of the esophagus is the mucosa, which is composed of epithelial cells and contains glands that secrete mucus to aid in swallowing. The muscle layer is found beneath the mucosa and is responsible for peristalsis, or the coordinated contraction of smooth muscle to move food down the esophagus. The submucosa is a layer of connective tissue that supports the other layers of the esophagus. The adventitia is the outermost layer of the esophagus, which is composed of loose connective tissue that attaches the esophagus to surrounding structures. There is no such layer as the "secretory layer."

The Innermost Layer of the Esophagus Is Called The