The main function of the stomach is to digest food. It serves as a muscular sac where food is mixed with gastric juices, consisting of hydrochloric acid and digestive enzymes. This acidic environment breaks down food particles, particularly proteins, into smaller components, facilitating further digestion. The stomach's churning motion helps mix food with these digestive substances, turning it into a semi-liquid mixture called chyme. Once the food is adequately processed, the stomach gradually releases it into the small intestine for further digestion and nutrient absorption. The stomach also plays a role in regulating the release of food into the intestine, ensuring efficient digestion.