-The esophagus is in the digestive system.
-The esophagus is a muscular tube which carries food and liquids from the throat to the stomach for digestion after it has been chewed and softened in the mouth.
-It is about 25 cm long and 2.5 cm across.
-Food is forced downward to the stomach by powerful wave like muscle contractions passing through the walls of the esophagus.
-The contractions are so strong in the throat and the esophagus, we can swallow in any position -- even upside-down!
-The esophagus wall contains two muscle layers, an inner circular layer and an outer circular layer.…
