Which organ within the digestive system is a site of both mechanical and chemical digestion?

Both mechanical and chemical digestion occur in the stomach. Mechanical digestion includes churning, while chemical digestion includes the release of HCl and pepsin to degrade ingested proteins. The esophagus is not a site of digestion. The small intestine is a significant site of chemical digestion and nutrient absorption, but not mechanical digestion. The large intestine is a site of water reabsorption and storage of undigested food in preparation for elimination, but is not a site of mechanical or chemical digestion.