PowerPoint Presentation The Human Digestive System

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The Human Digestive System

• Chapter 49

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The Digestive System
Lets find out what happened to your breakfast
today!

• Mouth
• Esophagus
• Stomach
• Small Intestine
• Large Intestine
• Liver
• Gall Bladder
• Pancreas

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Esophagus

• Approximately 10 long
• Moves food from the throat to the stomach
• Muscle movement called peristalsis
• If acid from the stomach gets in here thats
  heartburn.

4
Stomach

• Stores the food you eat, breaks it down into tiny
  pieces
• Mixes food with digestive juices
• Acid in the stomach kills bacteria

5
Small Intestine

• Small intestines are roughly 22 feet long
• Insides are coated with little fingers called
  cilia to increase surface area.
• Nutrients from the food pass into the bloodstream
  through the small intestine walls.

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Large Intestine

• About 5 feet long
• Accepts what small intestines dont absorb.
• Absorbs water and minerals from the waste matter.

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Liver

• Directly affects digestion by producing bile
• Bile helps digest fat
• Processes nutrients in the blood, filters out
  toxins and waste.
• Is often called the bodys energy factory

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Gall Bladder

• Stores bile from the liver
• Delivers bile when food is digested
• Fatty diets can cause gallstones

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Pancreas

• Produces compounds to digest fats and proteins
• Neutralizes acids that enter small intestine
• Regulates blood sugar by producing insulin

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Fun Facts

• HOW LONG ARE YOUR INTESTINES? At least 25 feet
  in an adult. Be glad you're not a full-grown
  horse -- their coiled-up intestines are 89 feet
  long!
• Food drying up and hanging out in the large
  intestine can last 18 hours to 2 days!
• In your lifetime, your digestive system may
  handle about 50 tons!!

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OK, now it's...
QUIZ TIME!
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What is the name of each colored organ?

• Green
• Red
• Pink
• Brown
• Purple
• Green
• Yellow

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Howd you do?

• Green Esophagus
• Red Stomach
• Pink Small Intestine
• Brown Large Intestine
• Purple Liver
• Green Gall Bladder
• Yellow Pancreas

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References and Links

• Your Digestive System and How It Works
• Digestive system diagram comes from this site
• The Real Deal on the Digestive System
• Pancreas Introduction and Index
• Your Gross and Cool Body - Digestive System