The rugae are the folds found in the stomach lining, and they play a crucial role in the digestive process. When the stomach is empty, these folds allow the stomach to expand and accommodate food and liquids when consumed. As the stomach fills, the rugae stretch out, increasing the stomach’s capacity.
Additionally, the rugae help with the mechanical digestion of food. As the stomach churns and mixes its contents, the folds create a greater surface area for the digestive enzymes and gastric juices to act on the food. This action aids in breaking down food into smaller particles, facilitating better absorption in the intestines later on.
In summary, the rugae enhance the stomach’s ability to stretch and contribute to the mechanical and enzymatic digestion of food, making them essential for effective digestion.