Learn the Parts of the Human Digestive System

An interactive presentationBy: Jessica West

4th-5th gradeED 205-03

Digestive System Main SlideAbout the PresentationMouth & TeethEsophagusStomachSmall IntestinesLiver & PancreasLarge IntestinesColonRectum & AnusReview of Digestive System VideosResources

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About this Presentation

This interactive PowerPoint allows students to review the different parts of the digestive system. Each slide allows the student to explore a different area of the digestive system

This PowerPoint is for either 4th or 5th grade and is easy for them to navigate and explore.

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Mouth & Teeth

The mouth is where digestion first begins. Food starts in your mouth and you begin digestion by chewing with your teeth. Food mixes with your salvia to make a soft ball of food. Next the ball of food moves into the esophagus.

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Click to hear what digestion sounds like in your mouth!

Esophagus

Food moves through your esophagus which is a tube that is about 25 cm long. It takes 4 to 10 seconds for your food to move through the esophagus. Your smooth muscles then move the food down toward the stomach.

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Stomach

The stomach is a muscular bag that can grow and shrink. Chemicals are mixed in with the food in your stomach in order to break it down. Food digests in your stomach for 2 to 4 hours until it becomes a liquid called “chyme” Quit

Click on the picture above to see how the stomach works.

Small Intestines

Your small intestines is 4 to 7 meters in length. Most digestion takes place in the small intestines. Different chemicals are released into the small intestines to break down fats, carbohydrates, and proteins. The absorption of nutrients into your body also takes place in the small intestines.

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Liver & PancreasThe liver gives off a greenish fluid called bile which breaks up the fat in the food you eat. Fats are broken down in the small intestines. Your pancreas gives off chemicals that make a digestive solution which helps break down food in the small intestines. It also gives off insulin which lets sugar go into your blood stream

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Pancreas

Large Intestines

Your large intestine’s main job is to absorb water from the mass of food that has not been digested. This keeps water inside your body so that you do not dehydrate.

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ColonYour colon is part of your large intestines.

The colon forms waste material that is going to be sent out of your body.

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Rectum & Anus

The rectum and anus are part of your large intestines. They release your waste material from the body.

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Review

Click the picture above for a tour of the digestive system

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Click the picture above to finish the tour of the

digestive system

Resources

Pictures:www.google.com

Videos:www.youtube.com

Books:Ortleb, Edward, and Dinah Zike. Human Body

Systems. New York: McGraw Hill Companies Inc., 2008.

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