Download - Materials 6 funnels/cardboard tubes 6 droppers Cups Food Food coloring Bags Hose Paper towels
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materials6 funnels/cardboard tubes6 droppersCupsFoodFood coloringBagsHosePaper towels
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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.
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RULESIf 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.
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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?
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Step 1: The MouthDigestion begins in the mouth
Saliva (spit) contains an enzyme called amylase which starts breaking down the food.
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Making poop continuedFunnel 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?
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Step 2: The StomachPushing 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!
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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!)
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Step 3: The Small IntestineYour food has now entered the
small intestine!
Nutrients are now taken through the villi
Blood vessels send it to the body
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Making poop…Set the small intestine on a paper
towel
What does the paper towel do?
What does this represent?
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Step 4: The Large IntestineHere, water is drained from the
excess waste
If there is not enough time for water to be absorbed-diarrhea
Too much water absorbed-constipation
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And we have…POOP!!
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Clean up proceduresIf you are person:
1- get a new cup2-get a new baggy3- get a new cardboard role4-pantyhose and place the tray
back on the counter
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HomeostasisIn your notebook, write how the
digestive system maintains homeostasis.
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Digestive System ReviewWhen a description appears,
decide as a group which vocabulary word goes with that definition and hold up your board.
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The place digestion begins
Mouth
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What is the enzyme in saliva that breaks down food?
Amylase
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The part of the digestive track that moves food from the mouth to the stomach
Esophagus
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Breaks down food by churning and using mucus, enzymes, and acid
Stomach
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Creates bile and breaks down fat
Gall Bladder
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Part of the digestive track where nutrients are absorbed and sent to the rest of the body
Small intestine
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Organ that filters out harmful toxins
liver
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Structures in the small intestine that absorb nutrients
Villi
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Organ that releases a hormone to regulate the amount of sugar in the blood
Pancreas
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Part of the digestive tracks that absorbs water from the excess waste
Large Intestine
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Name of the mixture in your stomach once it is churned and acid, enzymes, and mucus, have been added.
Chyme