Applied Anatomy and Physiology of the Esophagus
Structural Composition of the Esophagus
The esophagus is a muscular tube responsible for transporting food from the pharynx to the stomach, composed of mucosa, submucosa, muscularis externa, and adventitia.
6/7/2025• 7 min read• 61 views
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normalintermediateHuman Anatomy
Applied Anatomy and Physiology of the Esophagus
Structural Composition of the Esophagus
The esophagus is a muscular tube that transports food from the pharynx to the stomach. It is composed of several layers, each contributing to its function.
Layers of the Esophagus
- Mucosa: Composed of stratified squamous epithelium, protecting against mechanical stress.
- Submucosa: Contains connective tissue, blood vessels, and nerves, providing support.
- Muscularis externa: Consists of an inner circular and outer longitudinal muscle layer facilitating peristalsis.
- Adventitia: The outermost layer, anchoring the esophagus to surrounding structures.
Physiological Functions
The esophagus plays a crucial role in digestion by conducting food via coordinated muscle contractions known as peristalsis. The lower esophageal sphincter prevents gastric reflux, maintaining digestive integrity.
Tags
#Esophagus#Digestive System#Human Anatomy#Physiology
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