1. The Digestive System A “Poop” Lab

2. materials 6 funnels/cardboard tubes 6 droppers Cups Food Food coloring
Bags
Panty hose
Paper towels

3. Let’s make poop!
In your group, mash the food in your cup with your utensil
Add couple of drops of water
What do you think this represents?

4. Step 1: The Mouth Digestion begins in the mouth
Saliva (spit) contains an enzyme called amylase which starts breaking down the food.

5. Making poop continued
Funnel the food in your cup into your cardboard tube
One person needs to push the food down the cardboard into the baggy
Knead your baggy
What does the cardboard represent? The bag?

6. Step 2: The Stomach
Pushing food down the esophagus is called peristalsis
Your stomach breaks down food by churning and using enzymes, stomach acid, and mucus. The new mixture is called chyme.
The gall bladder creates bile which breaks down fat
Add food coloring to the mixture to represent these 3 things!

7. Making poop… Push the mixture in the baggy to the corner
Add green food coloring (Bile)
Your mixture is now called chyme
Cut a hole in the corner and pour into the hose (over the paper towels!)

8. Step 3: The Small Intestine
Your food has now entered the small intestine!
Nutrients are now taken through the villi
Blood vessels send it to the body

9. Making poop… Set the small intestine on a paper towel
What does the paper towel do?
What does this represent?

10. Step 4: The Large Intestine
Here, water is drained from the excess waste
If there is not enough time for water to be absorbed-diarrhea
Too much water absorbed-constipation

11. Step 5:
Cut a hole in the panty hose. Squeeze the remaining contents out on your paper towel.
And we have…..