Ucfsarc.files.wordpress.com

Esophagus . Structure. 25- 30 cm long, propels food into the stomach. It is about 40cm from the incisor teeth. We have 3 narrow parts. Upper esophageal sphincter prevents air entering esophagus. Aortic narrowing surrounded by arch of aorta. Lower esophageal sphincter (diaphragmatic narrowing) connected to stomach ................
................