What is the histology of the esophagus?

Esophageal epithelium is non-keratinized stratified squamous. Note that the basal surface of the epithelium can be deeply indented by connective tissue papillae. In oblique section through the epithelium, the connective tissue papillae can look like “islands,” apparently surrounded by epithelium.

What are the histological features of the esophageal wall?

For the purpose of histological descriptions, the esophagus is subdivided into upper (entirely skeletal muscle in the muscularis externa),middle (mixed smooth and skeletal muscle) and lower (entirely smooth muscle) portions.

What type of tissue is the esophagus?

stratified squamous epithelium
The esophagus contains four layers—the mucosa, submucosa, muscularis, and tunica adventitia. The mucosa is made up of stratified squamous epithelium containing numerous mucous glands. The submucosa is a thick, loose fibrous layer connecting the mucosa to the muscularis.

What are the three parts of the esophagus?

The esophagus is subdivided into three anatomical segments: cervical, thoracic, and abdominal. The cervical segment begins at the cricopharyngeus and terminates at the suprasternal notch. This segment lies just behind the trachea, to which it is joined via loose connective tissues.

What type of cells are in the esophagus?

The esophagus wall It has 3 parts: The epithelium is the innermost lining of the esophagus and is normally made up of flat, thin cells called squamous cells. This is where most cancers of the esophagus start. The lamina propria is a thin layer of connective tissue right under the epithelium.

What type of cells line the esophagus?

During embryogenesis, the esophagus is initially lined by ciliated, columnar cells which are replaced by stratified squamous cells as maturation proceeds (Figure 1)9-10.

What is the structure of the esophagus?

The esophagus is a muscular tube connecting the throat (pharynx) with the stomach. The esophagus is about 8 inches long, and is lined by moist pink tissue called mucosa. The esophagus runs behind the windpipe (trachea) and heart, and in front of the spine.

Which epithelium is found in esophagus?

stratified squamous
(B) The human esophageal epithelium is nonkeratinized stratified squamous and comprises many cell layers.

What are the 3 parts of the esophagus?

The esophagus is subdivided into three anatomical segments: cervical, thoracic, and abdominal.

What type of tissue is the esophagus made of?

Constitution of muscularis propria of the esophagus. The muscle tissue of esophagus consists of striated muscle (skeletal) in the upper third, mixture of skeletal and smooth muscle in the middle third, and pure smooth muscle in the lower third.