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Answers to Digestive System Study Guide
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Organ

Function

mouth.gif

Mouth

Begins to break down food.

Mechanical digestion: process of breaking food into smaller pieces. Your teeth grind the food and the tongue moves the food around.

Chemical digestion: process of chemically removing nutrients from food. Your salivary glands produces saliva for chemical digestion.

esophagus_asco_small.jpg ...

Esophagus

The transport tube that carries chewed food to the

stomach.  muscles squeeze the food down to the stomach.

stomach.jpg

Stomach

Continues to break down food.

Mechanical digestion: 3 stomach muscles work together to churn the food

Chemical digestion: secretes gastric juices and acids

 ... of the small intestine

Small Intestines

The organ where most of the chemical digestion of

food takes place; nutrients from food are also absorbed through the

 villi in this part of the digestive system.

large_intestine_375.jpg

Large Intestines

The organ where water is absorbed from the food and

taken into the bloodstream; prepares the remaining

undigested food for elimination from the body.

 ... the Rectum - Rectum Diagram

Rectum

A short tube that stores solid waste until it is eliminated from the

body through the anus.

The Liver

Liver

A secondary organ of the digestive system that

produces bile, which is used by the body to break up fat particles.

Gall Bladder

Gallbladder

A secondary organ to the digestive system that

functions to store bile produced by the liver.

 ... health and beauty - Pancreas

Pancreas

A secondary organ to the digestive system that

functions to produce digestive juices that help to further

break down the food in the small intestine.

Digestive System Structure:

  1.  Mouth
  2.  Esophagus
  3.  Liver
  4.  Large Intestines
  5.  Stomach
  6.  Pancreas
  7.  Small Intestines
  8.  Rectum