Which organ is responsible for connecting the mouth to the stomach?

The esophagus is the organ that connects the mouth to the stomach. It is a muscular tube that serves as a passage for food and liquid to travel from the oral cavity down to the stomach. When you swallow, the esophagus provides a pathway allowing food to move through peristaltic movements, which are coordinated contractions of the muscles in the esophageal wall.

The other organs mentioned fulfill different roles in the digestive system. The large intestine primarily absorbs water and electrolytes from indigestible food matter and compacts waste for excretion. The small intestine is involved in the digestion and absorption of nutrients, receiving partially digested food from the stomach but does not connect the mouth to the stomach directly. The liver plays a vital role in metabolism and detoxification but does not have a direct connection between the mouth and stomach. Therefore, the esophagus is uniquely responsible for that specific connection in the digestive system.