2.3 Structures of the Digestive System
To acquire nutrients from food, the body must process the food we eat mechanically and chemically. The digestive tract is a long tube starting with the mouth and ending with the anus. Everything in between is part of a complex and automatic
response. It ensures that the food taken in ends up being converted to either usable molecules, which are absorbed, or to unusable waste products, which are eliminated. The digestive system also includes important accessory organs that are
necessary for digestion.
Study the image and use it to label the organs of the digestive system in your Unit D diagram package. This package will be used several times in Unit D. Keep it handy for reference purposes.