JLAB Academic Practice Test 2025 – Your All-in-One Guide to Exam Success!

The digestive system is specifically responsible for the breakdown of food, allowing the body to absorb essential nutrients. This complex system consists of various organs, including the mouth, esophagus, stomach, intestines, and accessory structures like the liver and pancreas. Each part plays a vital role in processing food: the mouth begins digestion through mechanical and enzymatic actions, the stomach further breaks it down using acids and enzymes, and the intestines absorb nutrients into the bloodstream.

Nutrient absorption is critical for providing the energy and raw materials needed for the body's functions, growth, and repair. The entire process is finely coordinated to ensure that the maximum amount of nutrients is absorbed efficiently, which is a key function of the digestive system, distinguishing it from other body systems that serve different roles, such as waste removal or hormonal regulation.