Here's why:
* Esophagus: The esophagus is a muscular tube that connects the mouth to the stomach. It's primary function is to move food from the mouth to the stomach through a process called peristalsis, which involves rhythmic muscle contractions. The esophagus doesn't play a role in digestion itself.
* Other digestive organs: Other organs in the digestive system, like the stomach, small intestine, and large intestine, are involved in both transporting food and breaking it down into smaller molecules that the body can absorb.
