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By Hannah, Madi, and Faith.  It breaks down food into smaller substances.

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Presentation on theme: "By Hannah, Madi, and Faith.  It breaks down food into smaller substances."— Presentation transcript:

1 By Hannah, Madi, and Faith

2  It breaks down food into smaller substances

3  Chemical digestion  Mechanical digestion  Taste buds  The epiglottis

4 DDid you know when you think of your favorite food it creates saliva? SSaliva moistens your food in your mouth. SSaliva contains a chemical called ptyalin. PPtyalin breaks down starches in food into sugar. PPtyalin is a enzymes in your body that controls a variety of chemical reactions. TThis is called chemical digestive system

5 WWhen you bit into food you bit with your front teeth which is called incisors. YYour lips pull the food into your mouth. YYour tongue pushes it to the back of your mouth. YYour molars or back teeth chew the food into smaller pieces. CCanines or eyeteeth rip the food this is called the mechanical digestion

6 WWhen you eat food it is up to your tongue which has taste buds to decide if it is good or bad tasting. TThe is four different types of taste buds. TThe four taste are salty, bitter, sour, and sweet. TThe flavor of food does not come from the taste. TThe flavor is made up of the mixtures of taste, texture, and order.

7  When your food is chewed up your smooth muscles in the back of your throat they force it down your throat.  Your epiglottis or the small flap of tissue it closes over your windpipe.  The windpipe allows to breath because it stretches to your lungs.  Your epiglottis helps your food and water go down the right pipe.  After you swallow the epiglottis allows air to move through again.

8  Remember when we said that when you swallow the smooth muscles it forces it down that is called the esophagus.  The stomch is a g shaped organ that is connected to the esophagus.  The mucus on your digestive organs help food travel  It takes 12 seconds to travel from your esophagus to your stamach  Powerful contractions happen as soon as food comes in the Esophagus to push the food down.

9 WWhen food is in the stomach it releases a gastric juice, it contains pepsin. PPepsin is a hydrochloric acid that is thick and slippery mucus. WWhithout the mucus protecting the stomach the pepsin would break down the complex protien into simpler protien. TThe muscle contraction with the gastro juices push the food to the stomachs exit.

10  when food is put in your mouth it looks a lot different then when it through your stomach.  It has been changed into a soft watery substance.  After moving through the stomach it goes to the small intestine.  Food moves through the small intestine by perisdalsis.

11  To the right of your stomach is your liver bodies largest and heaviest organ.  It help digestion by creating a substance called bile.  The gallbladder stores the bile.  The bile breaks big fat mollucles into smaller ones.

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