Fremont Magnet Elementary

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Digestive System

Standard 2c - Students know the sequential steps of digestion and the roles of teeth and the mouth, esophagus, stomach, small intestine, large intestine, and colon in the function of the digestive system.
 

1. Circulatory System Review

Last week you learned what your blood does in your body. 

 

Which cells deliver oxygen to every part of your body?

  Platelets
  White Blood Cells
 
Red Blood Cells

In which body part does your blood pick up oxygen?

  Heart
  Lungs 
 
Arteries

2. The Digestive System
  

You know that a car needs fuel to make it run, your body is like a car because it needs fuel too.  Your fuel is food.  Your body makes chemical changes to the food so that it turns into energy for you.  Just how does that happen? 

 

3. Teeth

Can you swallow a whole apple?  No way, it won't fit!  You have to make it smaller so that it will fit into your mouth.  How do you do that?

Your teeth are like little chopping machines.  They chop and grind your food into little pieces so that they can be swallowed. Saliva makes it mushy so that it's easier to swallow.  Where does it go next....?

4. Esophagus

Your mouth is part of your head, and your stomach is in the middle of your body.  So how does food get from your mouth all the way down to your stomach? 

The esophagus is a tube about 10 inches long that connects your mouth to your stomach.   The esophagus has muscles that squeeze the food, like when you squeeze toothpaste out of the tube.  It moves the food slowly into the stomach.

5. Stomach

Did you know that food spends 2 or 3 hours in your stomach? It doesn't just sit there, your stomach is busy mixing the chunks of food you swallowed with acids that turn it into a milkshake like mixture. 

 

6. Small Intestine

After your stomach is done making a mushy milkshake like mixture of your food, it goes to the small intestine.  The small intestine has the important job of breaking down the food mixture so your body can absorb all the nutrients it needs from food - vitamins, minerals, proteins, carbohydrates, and fats.  Your small intestine is 22 feet long!

 

7. Large Intestine

Anything that cannot be absorbed into your body goes to the final part of the journey, the large intestine.  The large intestine is fatter than the small intestine and its job is to move all the things your body doesn't need out of your body.  It holds all the waste until you are ready to go to the bathroom.

8.  Now Try This

Click here to put the parts together

9. Watch This

Click here to see a BrainPop Digestive System movie.

Click here to see another movie

10. More Fun

 

 

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