NFS284H1 Chapter 2: NFS284 PHYSIOLOGY FUNDAMENTALS READING
15 Feb 2018
School
Department
Course
Professor
Document Summary
Looking at the path that nutrients take through the body, involves 4 steps: digestion and absorption. Digestion is the process of breaking food into component parts small enough to be absorbed into the body. Absorption is the process of taking substances into the interior of the body. This process involves mechanical processes for breaking down the food into small particles, as well as the breakdown of bonds in the molecules found in the food. The digestive system is designed to optimize these processes. The digestive system, or the gi (gastrointestinal) tract is a long tube from the mouth to the anus. The space inside the tube is called the lumen. Digestible food will travel from the mouth and be absorbed at some point along. Indigestible food components that cannot be absorbed will travel along the. Transit time is the time it takes for food to travel the whole length of the tube.
