Cellulose is a complex carbohydrate found in plant cell walls that cannot be digested by any mammal (including humans). This is because mammals lack the enzyme which breaks the β(1,4) linkages found within cellulose.
cullulose
it is absorbed through the walls of the small intestine into the bloodstream.
blood carries the digested food through all parts of the body
Muscle
Peristalsis is the process that moves food through your digestive system.
The typical manner is to excrete solid waste material through one's anal sphincter. The matter is typically digested plant fibers or animal flesh.
Milk is digested through a series of process when it passed throught the digestive tract. The protein casein present in milk is acted upon by pepsin, trypsin, trypsinogen. The carbohydrate lactose is broken down by lactase to give glucose and galactose.
Fiber
It is not digested but goes through digestive system to clean through the body.
it is digested and is stored as fat.
Food is not digested in the pancreas. In fact, food doesn't pass through the pancreas at all. The pancreas secretes digestive enzymes to the small intestine (duodenum).
If you eat something that you cannot digest, it will pass through your digestive system and be eliminated in the form of excrement.Food that is not digested is expelled from the bowel in the stool.
Digestive System
The digestive system is pretty simple. The newt eats its food, it is then sent to the stomach, digested and sent through the intestine, and eventually excreted.
It comes out the other end.
When most proteins, fats, and carbohydrates are digested completely, they are converted to the end products that are soluble and can easily pass through cell membranes.
Digestion is a process that begins as soon as the food enters your mouth. The food is not stored anywhere; it moves continually through the digestive system, being digested. There are no pauses.
Food is digested, or broken down, so that the nutrients can be extracted for use by the body as it passes through the digestive system. If food wasn't digested, you would not have the energy required to run vital chemical reactions, eventually resulting in death.