Stomach- The stomach wall consists of 4 layers of tissue. From deep (external) to superficial (internal) these are the serosa, muscularis externa, submucosa and mucosa. This layered arrangement follows the same general structure in all regions of the stomach, and throughout the entire gastrointestinal tract.
Intestine- The small intestine consists of four layers: mucosa, submucosa, muscle layer, and adventitia. The intestinal epithelium is lined with a single layer of polarized cells, among which the major types include enterocytes, goblet cells, Paneth cells, stem cells, and others.
Esophagus- The human esophageal epithelium is nonkeratinized stratified squamous and comprises many cell layers. Normally, the esophageal lining (the epithelium) consists of flat, layered cells similar to those in the skin. This squamous epithelium stops abruptly at the junction of the esophagus with the stomach near the lower end of the lower esophageal sphincter.
Stomach- The stomach wall consists of 4 layers of tissue. From deep (external) to superficial (internal) these are the serosa, muscularis externa, submucosa and mucosa. This layered arrangement follows the same general structure in all regions of the stomach, and throughout the entire gastrointestinal tract.
Intestine- The small intestine consists of four layers: mucosa, submucosa, muscle layer, and adventitia. The intestinal epithelium is lined with a single layer of polarized cells, among which the major types include enterocytes, goblet cells, Paneth cells, stem cells, and others.
Esophagus- The human esophageal epithelium is nonkeratinized stratified squamous and comprises many cell layers. Normally, the esophageal lining (the epithelium) consists of flat, layered cells similar to those in the skin. This squamous epithelium stops abruptly at the junction of the esophagus with the stomach near the lower end of the lower esophageal sphincter.