What is one of the functions performed by the digestive system?

The digestive system is primarily responsible for breaking down food into smaller, absorbable components, which involves various processes, one of which is mechanical digestion. Mechanical digestion refers to the physical breakdown of food through processes such as chewing and the churning of food in the stomach. This process increases the surface area of food particles, making it easier for enzymes and digestive juices to chemically digest the nutrients.

Mechanical digestion is crucial for effective digestion because it prepares the food for the chemical processes that follow. For instance, chewing prepares food in the mouth for further digestion in the stomach and intestines. Therefore, it is a fundamental function of the digestive system that facilitates the overall digestive process.