How Well Do You Know The Digestive System? By Vincent Stevens February 19, 2019 Do you ever stop to think about all of the different components of the digestive system? There are a lot of working parts that work to absorb nutrients and eliminate waste. Let's see how much you know about the human digestive system. How long is an adult's small intestine? 6 feet 10 meters 20 feet 3 yards Where does the digestive process start? It begins in the esophagus It begins in the mouth It begins when you have a bowel movement It begins when food enters the stomach What is the liver's role in the body? It processes nutrients from the small intestine It turns water into food It assists the stomach It mashes up food Drinking more water can help you release water weight. True False The muscle contractions that occur along the digestive tract and help to move food along are called: Elimination Peristalsis Hypertension MuscularisNameEmail Share: