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The Digestive System

The Digestive System. . Organs of the Digestive System. MouthEsophagusStomachSmall IntestineLarge Intestine. The Digestive System. Is a series of connected organs whose purpose is to break down, or digest, the food we eat. Food is made up of large, complex molecules, which the digestive system breaks down into smaller, simple molecules that can be absorbed into the bloodstream.The simple molecules travel through the bloodstream to all of the body's cells, which use them for growth, r33336

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The Digestive System

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    1. The Digestive System By: Heather Bedwin Central Michigan University EDU 330 M 6:30-9:20

    2. The Digestive System

    3. Organs of the Digestive System Mouth Esophagus Stomach Small Intestine Large Intestine

    4. The Digestive System Is a series of connected organs whose purpose is to break down, or digest, the food we eat. Food is made up of large, complex molecules, which the digestive system breaks down into smaller, simple molecules that can be absorbed into the bloodstream. The simple molecules travel through the bloodstream to all of the body's cells, which use them for growth, repair, and energy.

    5. Mammals vs. Plants Animals and humans have a digestive system. We eat plants and animals to feed our body and produce energy. Plants do not have a digestive system. Plants make their own food through photosynthesis.

    6. Mechanical Phase Teeth break down the food into smaller pieces. This is called chewing.

    7. Chemical Phase Enzymes break down the chewed food. These smaller pieces of food particles are then absorbed and distributed through out the body.

    8. Human Digestive System If a human adult’s digestive tract were stretched out, it would be 20 to 30 ft long. In humans, digestion begins in the mouth, where both mechanical and chemical digestion occur. The mouth quickly converts food into a soft, moist mass. The tongue pushes the food against the teeth, which cut, chop, and grind the food.

    9. Human Digestive System cont… Saliva in the mouth is added through ducts in the cheeks to moisten the food. Once food is a soft mass, it is ready to be swallowed. Once swallowed the food enters the esophagus and the digestive system begins once it hits the stomach.

    10. Digestive System Online Click on the link below to view an online tutorial about the digestive system and to learn some fun facts. Follow the steps given to you, when you are done return to the power-point presentation for more fun! http://www.uen.org/utahlink/tours/tourFames.cgi?tour_id=13125

    11. Digestive System Quiz On this last activity go to the following website, click on “Pick a Movie” and scroll down to the digestive system. Watch the whole movie and when it is done take the interactive quiz and see how well you know what has been learned. http://www.brainpop.com

    12. References http://www.brainpop.com http://www.uen.org/utahlink/tours/tourFames.cgi?tour_id=13125 http://encarta.msn.com http://digestive.niddk.nih.gov/ddiseases/pubs/yrdd/index.htm

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