Thursday, September 20, 2012

Digestion-Small Intestine Part 2

Today we looked at how fat and protein are digested even further in the small intestine with the help of the liver by doing an emulsification project. I explained how in order to properly break down and digest fat, people need the liver and the gall bladder to do their jobs. The liver is the one responsible for producing bile and storing it in our gall bladder until it is needed in the small intestine.

Our experiment came from an excellent science resource filled with tons of friendly information and awesome experiments:
Product Details 

Our project consisted of seeing emulsification in action. We used milk as suggested because it contains fats and proteins in solution. The following materials are needed:
(cups, detergent, food coloring, milk)

We placed about 1/4 cup of milk in a cup, added a small spoonful of detergent to bring the substances that are normally not soluble together. We jotted our observations. It was still difficult to "see" the fats/proteins clumped together. We then added the food coloring and we saw the explosion of colors. It was then much easier to observe the fats/proteins in the milk. We discussed that because bile emulsifies fats, bringing them together with water, this makes it much easier for enzymes to get at the fats/proteins and break them down even further in the small intestine.

It was really neat to see their faces as they were making their observations...and of course hearing them say, "Wow! How cool!" makes teaching so worth it.

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By Dorothy Law Nolte, Ph.D.

If children live with criticism, they learn to condemn.
If children live with hostility, they learn to fight.
If children live with fear, they learn to be apprehensive.
If children live with pity, they learn to feel sorry for themselves.
If children live with ridicule, they learn to feel shy.
If children live with jealousy, they learn to feel envy.
If children live with shame, they learn to feel guilty.
If children live with encouragement, they learn confidence.
If children live with tolerance, they learn patience.
If children live with praise, they learn appreciation.
If children live with acceptance, they learn to love.
If children live with approval, they learn to like themselves.
If children live with recognition, they learn it is good to have a goal.
If children live with sharing, they learn generosity.
If children live with honesty, they learn truthfulness.
If children live with fairness, they learn justice.
If children live with kindness and consideration, they learn respect.
If children live with security, they learn to have faith in themselves and in those about them.
If children live with friendliness, they learn the world is a nice place in which to live.
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