Gastrointestinal Anatomy And Physiology: - The Es...

Measuring roughly 25 centimeters (10 inches) in length, the esophagus is a muscular tube located behind the trachea and in front of the spine. It is divided into four distinct layers:

Occurs when the LES weakens, allowing acid to damage the esophageal lining. Gastrointestinal Anatomy and Physiology: The Es...

A result of chronic acid exposure where the squamous cells change into columnar cells (similar to the stomach), increasing the risk of cancer. Conclusion Measuring roughly 25 centimeters (10 inches) in length,

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

While often overshadowed by the churning power of the stomach or the nutrient-absorbing prowess of the small intestine, the esophagus is far more than a simple "delivery pipe." It is a highly specialized, muscular conduit that serves as the critical first stage of the gastrointestinal (GI) journey. 1. Anatomical Structure: More Than a Tube

This remains closed during breathing to prevent air from entering the stomach and opens specifically during swallowing.

The esophagus is guarded at both ends by physiological valves known as sphincters: