And Physiology: The Es...: Gastrointestinal Anatomy

If food gets stuck or moves too slowly, "stretch receptors" in the esophageal wall trigger a second wave to clear the remaining debris.

The esophagus is guarded at both ends by physiological valves known as sphincters: Gastrointestinal Anatomy and Physiology: The Es...

The innermost lining, composed of stratified squamous epithelium . This tough, "multi-layered" tissue is designed to withstand the friction of coarse food particles. If food gets stuck or moves too slowly,

The outer layer of connective tissue that anchors the esophagus to surrounding structures in the chest. 2. The Gatekeepers: Upper and Lower Sphincters Gastrointestinal Anatomy and Physiology: The Es...