The esophagus is a tube lying anterior to the _____ and posterior to the_____ and _____. It connects the _____ to the _____, and has a(n) _____ at each end to control the entry and exit of food and drink.

3000+ review questions on anatomy and physiology. 

Anatomy refers to the internal and external structures of the body and their physical relationships, whereas physiology refers to the study of the functions of those structures.