Histology Embryology Esophagus ucosa submucosa muscularis adventitia
Esophagus mucosa submucosa muscularis adventitia
Histology Embryology Esophagus Passage way for food from the pharynx to the stomach epithelium: stratified squamous epithelium lamina propria: compact CT contain simple tubular glands muscularis mucosa: longitudinal arranged smooth muscle o At EG junction -thin simple columnar epithelium submucosa duct LCT e esophageal gland: mucous gland cularis --acidic mucin
Esophagus Passage way for food from the pharynx to the stomach mucosa: • epithelium: stratified squamous epithelium • lamina propria: compact CT contain simple tubular glands • muscularis mucosa: longitudinal arranged smooth muscle • At EG junction – thin simple columnar epithelium submucosa: • LCT • esophageal gland: mucous gland ---acidic mucin
Histology Embryology MUscularis extern到 inner circular and outer longitudinal upper 1/3: skeletal muscle middle 1/3: mixed of skeletal I muscle and smooth muscle Smooth uscle lower 1/3: smooth muscle Tunien adventitia Esophageal a fibrous coat of loose connective tissue Skeletal
Muscularis externa: • inner circular and outer longitudinal • upper 1/3: skeletal muscle • middle 1/3: mixed of skeletal muscle and smooth muscle • lower 1/3: smooth muscle Tunica adventitia: a fibrous coat of loose connective tissue
3 4 When empty, mucosa and submucosa lie in longitudinal fold 点
When empty, mucosa and submucosa lie in longitudinal folds
Histology Embryology Cardiac junction stomach esophagus Epithelial transition cardiac glands fundic(gastric Stratified Squamous glands non keratinized to simple columnar muscularis externa It is clinically important as it is the most site of esophageal carcinoma
• Epithelial transition ---Stratified Squamous nonkeratinized to simple columnar • It is clinically important, as it is the most site of esophageal carcinoma. Cardiac Junction