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The Digestive System

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morgan patch

on 4 April 2014

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Transcript of The Digestive System

Amylase - saliva
The Mouth
The Digestive System
- None
The Esophagus
Lipase - stomach
Pepsin - stomach
Gelatinase - stomach
The Stomach
Bile - liver
Lipase - pancreas
Amylase - pancreas
The Duodenum
Amylase - pancreas
Lipase - pancreas
Maltase - pancreas
Lactase - small intestine
Trypson - pancreas
Chymotrypson - small intestine
The Small Intestine
The Colon
The Anus
Additional Organs
The mouth is the first step in digestion. It mechanically digest food by breaking the food apart into small and easy to swallow pieces. The saliva also plays part into breaking down the food by making it soft so it can easily slip down the esophagus.
The second step of digestion is the esophagus. Once the fish is swallowed, it goes into the esophagus. Through muscle contractions, the
then travels to the stomach.
The stomach plays a big role in digestion. Its what chemically and mechanically digest your food. The stomach secretes enzymes that break down the protein in the fish and churns the fish into a liquid mixture called chyme.
In the duodenum, enzymes break down the protein particles completely. Bile from the liver breaks up the fat from the fish into small droplets, and fat enzymes break them down even further.
The fats and proteins, along with the vitamins and the minerals in the fish, are now small enough to be absorbed into the blood stream. Now all that's left is undigested waste and water.
As the undigested waste moves through the colon, most of the water is absorbed into the bloodstream and the rest of the solid waste is moved to the rectum.
The undigested waste (feces) is then expelled through the anus and the digestive system starts all over again.
The pancreas, the liver, and the gallbladder all contribute to digestion. They create the enzymes that break down particles in the food.





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