Digestive Tracts

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Brittni Philpot

8th Grade

Health

Introduction

Online essay help on Digestive Tracts

How does the Digestion System Work?

The digestive system is a series of hollow organs joined in a long tube that starts at the mouth and ends at

the anus. Inside the tube is a lining called the mucosa. In the mouth, stomach, and small intestine, the

mucosa contains tiny glands that produce juices to help digest food. Two solid organs, the liver and the

pancreas, produce digestive juices that reach the intestine through small tubes. The digestive juices are used

to turn swallowed food into a substance that the body can use, and this substance travels through your small

intestine, where the proteins are absorbed through the walls and used, and whatever isn't used is disposed

of.

Describe the body parts in your system and what they do

The first gland that starts the digestion of food would be the salivary glands. The saliva that is produced by

these glands contains an enzyme that begins to digest the starch from food into smaller molecules.

The next set of digestive glands is in the stomach lining. They produce stomach acid and an enzyme that

digests protein. After the stomach empties the food and juice mixture into the small intestine, the juices of

two other digestive organs mix with the food to continue the process of digestion. One of these organs is the

pancreas. It produces a juice that has alot of enzymes to break down the carbohydrate, fat, and protein in

food. Other enzymes that are active in the process come from glands in the wall of the intestine or even a

part of that wall.

The liver produces a digestive juice called bile. The bile is stored between meals in the gallbladder. At

mealtime, it is squeezed out of the gallbladder into the bile ducts to reach the intestine and mix with the fat

in food. The bile acids dissolve the fat into the watery contents of the intestine. After the fat is dissolved, it

is digested by enzymes from the pancreas and the lining of the intestine. After the food is digested, water

and minerals are absorbed from the cavity of the upper small intestine. Most of the absorbed minerals are

carried off in the bloodstream to other parts of the body for storage or more chemical change. What ever is

not used is waste, and is disposed from the body through the large intestine.

What are some problems or diseases this system could have?

One of the most common problems the digestive system can have is diarrhea. Diarrhea is loose water stools,

occurring more than three times in one day. Another disease is appendicitis. Appendicitis is inflammation of

the appendix. If untreated, an inflamed appendix can burst, causing infection and even death. Appendicitis

can affect people at any age. The last disease that I am going to mention is the Celiac Disease. Celiac

disease is a digestive disease that damages the small intestine and interferes with absorption of nutrients

from food. People who have celiac disease cannot tolerate a protein called gluten, which is found in wheat,

rye, barley, and possibly oats.

Why is this system important to the body?

The digestive system is important to the body because it prepares food, which gives the body the energy that

it needs, for hundreds of millions of body cells. Food cannot reach cells when it is eaten because it cannot

pass through the intestinal walls to the bloodstream and, if it could, it would not be in a useful chemical

state. The stomach changes food physically and chemically and disposes of what it cannot use. Physical

and chemical modification depends on exocrine and endocrine secretions and controlled movement of food

through the digestive tract.

Conclusion

The digestion system is truly one of the most important systems in the body. It supplies all the energy we

need to go through each and every day, that is why it is important to maintain a healthy diet. I learned about

different diseases you can get if u don't take care of your body properly. So remember, a healthy diet, a

healthy body.

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