Digestion Lab Questions

In this lab, we measured and represented our digestive systems with ribbon and string, to understand just how long each part is. Once the activity was over we saw how our mock digestive tracts stretched all the way across the classroom, giving us a better sense of its size. After I compared the my height in meters, 1.75, and the length of my digestive system in meters, 9.4, I realized my digestive system was nearly five and a half time longer then the length of my 5'9 body. I think that the system is able to fit in the body by folding itself over and over again. My guess for how long it takes for food to move throughout the entire system is completely random cause I have nothing to reference my answer off of, so I'd say, one day. After I did some research to find the real answer I found it takes from around 24 to 72 hours. Activity levels and types of food influence the digestion time. Digestion is the mechanical and chemical breakdown of food throughout the ailmentary canal while absorption is the process of intaking nutrients and water to help support the body. The small and large intestine is used during absorption and the stomach, mouth and liver are involved in digestion. I question what factors alter digestion in what way? I also wonder what parts of foods are digested and what are absorbed? I want to learn more about the liver and what types of functions it has.
Data Table