The Digestive System: Organs of the GI Tract

By-Jenna Evans.
The digestive system is a series of organs that break down food and take in the the nutrients used by the body as a sorce of energy.
This system consists of seven parts
Mouth, Esophagus, Stomach, Small Intestine, Large Intestine, Rectum, Anus.
I. Mouth
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A. Where mechanical digestion begins.
1. Includes the salivary glands ( chemical digestion) which release saliva and helps to moisten food and make it easier to swallow.
a. begins digestion of carbohydrates
II. . Esophagus
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A. Tube that connects the throat to the stomach.
1. While going down the esophagus, peristalsis occurs, moving food toward the stomach
III. Stomach
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A. Breaks food into smaller pieces which make food easier to digest.
1. Gastric juices are produced to prepare for the absorption of food.
IV. Small intestine
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A. Which contain three sections:
1. Ileum
2. Jejunum
3. Duodenum
B. Soak up nutrients & brings them into the bloodstream.
V. Large intestine (colon)
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A. Stores and disposes of waste.
VI. . Anus
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A. Begins at the end of the large intestine.
1. Where stool passes through before leaving at the anus.
VII. Rectum
A. Where stool passes out of the body from.