31+ Anatomy Bat Digestive System Background. The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver, and gallbladder). The digestive system includes the digestive tract and its accessory organs, which process food into molecules that can be absorbed and utilized by the cells of the body.
Introduction to the digestive system. Explore the human digestive system anatomy and know your organs and their functions in your quest for natural health. Overview of the digestive system—how food moves through each part of the gi tract to help break down food for energy, growth, and cell repair.
The material within this tract is considered to be outside of the body.
Peristalsis, which is the contraction of muscles that moves food through the digestive system, also mechanically breaks down the food. The wall of the digestive tract consists of three layers: Manual digestion is the breakdown of food by mechanical means, such as chewing. How does my digestive system work?