What is the ultimate goal of digestion?

Answer 1

Let's use some examples. When you buy a TV, the intention is to watch some shows. If you leave it in its box and never plug it in, the television never performs the action for which it is intended. If you buy a telephone but never plug it in and you don't have service anyway, the phone becomes an object that cannot perform its function.

When you buy food at a store and bring it home, you know that each item contains nutrients. But, if you let the food sit, it never releases its nutrients. Through mastication (chewing), humans begin the process of breaking down food to release its nutrients and gain benefit from its calories and nutrients.

Digestion begins in the stomach, with the help of the gallbladder, by adding acids and bile salts to the food. This turns food to semi-solids. When it enters the small intestines, fluid is pulled from the cells into the small intestines. This begins to turn the semi-solids into a watery mush. Only then can the cells pull the nutrients and calories back to the bloodstream and into the cells.

But, the body can't use all of the food-mush we consume. Some of it is fiber, which helps the intestines but does not break down for use by the cells. If we continue to eat without expelling the previous meals, the body would become bloated. Eventually, we'd die.

So the body pushes the remaining mush into the large intestines. There (and especially in the colon), the body pulls back out most of the excess fluids. This makes the mush more solid. It is called stool, and takes the shape of the large intestines (roundish, long) as it becomes solid and continues to move downward.

The body processes the excess fluid through the kidneys. And it pushes out the stool as waste.

This complex process uses several body systems in an intricate balance to help the organism (the human body) to survive.

Answer 2

it is important for breaking of fats and The food that we humans eat contain many substances that are not suitable for human tissue. Therefor they need to be broken down in-order to gain a from that is suitable. The other reason is that many molecules are to large for to be absorbed into the human tissue, therefor they also need to be broken down. The three main types of food molecules that need to be digested are starch, proteins and triglycerides (fatty and oils). The digestion of these enzymes are natural but happen in a very slow rate, therefor the body has enzymes to speed up the reaction.

Answer 3

Tto absorb the nutrients from the food you eat.

Answer 4

It breaks food down into smaller organic molecules that can be absorbed and used by the body

Answer 5

Energy production