materials 6 funnels/cardboard tubes 6 droppers Cups Food Food coloring Bags Hose Paper towels

Warm-up Write the question and the answer you choose. How do the respiratory and circulatory systems work together? a. The respiratory system takes in carbon dioxide, while the circulatory system delivers it to the cells. b. The circulatory system takes in carbon dioxide, whiles the respiratory system delivers carbon dioxide to the cells. c. The respiratory system takes in oxygen while the circulatory system delivers oxygen to the cells. d. The circulatory system takes in oxygen, while the respiratory system delivers oxygen to the cells.

RULES If you get out of your seat, you will be removed from the class. If I am talking, you ARE NOT. The materials are not for playing but for learning. You have guided notes that must be filled in as we move through the lab.

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?

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

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?

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!

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!)

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

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

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

And we have… POOP!!

Clean up procedures If you are person: 1- get a new cup 2-get a new baggy 3- get a new cardboard role 4-pantyhose and place the tray back on the counter

Homeostasis In your notebook, write how the digestive system maintains homeostasis.

Digestive System Review When a description appears, decide as a group which vocabulary word goes with that definition and hold up your board.

The place digestion begins Mouth

What is the enzyme in saliva that breaks down food? Amylase

The part of the digestive track that moves food from the mouth to the stomach Esophagus

Breaks down food by churning and using mucus, enzymes, and acid Stomach

Creates bile and breaks down fat Gall Bladder

Part of the digestive track where nutrients are absorbed and sent to the rest of the body Small intestine

Organ that filters out harmful toxins liver

Structures in the small intestine that absorb nutrients Villi

Organ that releases a hormone to regulate the amount of sugar in the blood Pancreas

Part of the digestive tracks that absorbs water from the excess waste Large Intestine

Name of the mixture in your stomach once it is churned and acid, enzymes, and mucus, have been added. Chyme