Tuesday, April 13, 2010

Digestive System - Notes

Mouth:

1.  Mechanical digestion – making food into small pieces à easier digest

2. Saliva – chemical digestions à carbohydrates à sugar

                                       Amylase à rice and bread

Slimes, food à slide down the esophagus

 

Esophagus:

Squeezes your food down to stomach.

 

Stomach:

1. Mechanical digestion – churning food

2. Stores food

3. Chemically digest protein – meat

         - Makes acid to help break apart protein (meat)

         - Enzyme pepsin

 

Small Intestine:

Fats – bile from liver/ enzyme lipase  

Proteins - finished being digested – pepsin

Carbohydrates – finished being digested enzyme amylase

Digested food à protein, carbohydrates, fats go into your blood

 

Pancreas:

1. Makes all of your digestive enzymes that go into the small intestine

2. Makes insulin à which causes your cells to suck up the sugar in your blood

 

Liver:

1. Makes bile, which goes to the small intestine to help digest fat

2. Filters your blood

 

Large Intestine (Colon):

-       Stores undigested waste food

-       Absorbs all your water

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