The Digestive System
By Leona Senegal 
The Mouth

The mouth helps us in some ways. Our mouth
helps us with chewing. Our mouth also helps us
talk. The tongue helps with the talking. Our mouth
and our teeth work together.
Mucus

Mucus is thick and gooey. It contains antibodies
that help the body recognize bacteria and viruses.
Salivary Amylase

This Salivary Amylase is or can be called PTYLIN.
It can do work in the digestive system for hours
and hours.
Chemical Digestion

During Chemical Digestion Enzymes break down
large food molecules by the process of
hydrolysis.
The Esophagus

After our food is swallowed it goes down a tube.
The tube is called an esophagus. Our esophagus
pushes our food down to our stomach. When it is
pushed down it goes to the stomach.
The Stomach

The stomach is involved in the second stage of
digestion, after chewing. The stomach walls release
proteases, which are protein digesting enzymes like
pepsin and hydrochloric acid. It kills or inhibits any
bacteria that comes down with the food.
Duodenum

The Duodenum connects to the stomach and to
the pancreas.
Gastric Juices

This begins when the food is still in your mouth.
The nerves from the cheek and tongue send
messages to the nerves in your stomach.
The Chyme

It is food in the stomach that is partly digested and
mixed with stomach acids.
Mechanical Digestion

Mechanical digestion involves physical breakdown
of food. Mechanical digestion occurs in the
following locations: Mouth- Teeth, Tongue, Palates,
Esophagus- Peristalsis, and stomach.
The Small Intestine

The small intestine is where 90% of food occurs,
the other 10% goes to…..THE LARGE INTESTINE!!!
The Liver

The Liver has multiple functions. I will tell you
about 3 big jobs. 1. It cleans your blood. 2. It
produces an important liquid called bile. 3. It
stores energy in the form of sugar called
GLYCOGE.
The Bile

It is a digestive chemical that produced in the Liver
& stored in the Gall Bladder.
The Gall Bladder

The Gall Bladder is a small pouch under the Liver.
The Gall Bladder stores bile produced by the Liver.
After meals it is empty or flat. Before a meal it
may be the size of a small pear and full of bile.
The Pancreas

The Pancreas produces insulin and digestive
enzymes .These “juices” are made in the Pancreas
and travel through a small tube.
The Large Intestine

The first stop is the cecum, a pouch at the
beginning of the large intestine. Once it passes
through the cecum food passes through the colon.
Villi 

It can increase the surface of the intestines.
The Appendix

It has a lining which passes fluid from the blood
vessels into the middle of the appendix. It also
contains cells which help fight infections. Muscles
push the fluid into a large bowel.
Enzymes

The Enzymes are made amino acids, and they are
proteins. When an Enzyme is formed it is made by
strings together between 100 & 1,000 amino acids in
a very unique way.
Absorption

Absorption is the Transport of end products.
bibliography !!!

http://www.slideshare.net/brucecoulter/mec
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
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