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By Hannah, Madi, and Faith It breaks down food into smaller substances Chemical digestion Mechanical digestion Taste buds The epiglottis Did you know when you think of your favorite food it creates saliva? Saliva moistens your food in your mouth. Saliva contains a chemical called ptyalin. Ptyalin breaks down starches in food into sugar. Ptyalin is a enzymes in your body that controls a variety of chemical reactions. This is called chemical digestive system When you bit into food you bit with your front teeth which is called incisors. Your lips pull the food into your mouth. Your tongue pushes it to the back of your mouth. Your molars or back teeth chew the food into smaller pieces. Canines or eyeteeth rip the food this is called the mechanical digestion When you eat food it is up to your tongue which has taste buds to decide if it is good or bad tasting. The is four different types of taste buds. The four taste are salty, bitter, sour, and sweet. The flavor of food does not come from the taste. The flavor is made up of the mixtures of taste, texture, and order. 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. 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. When food is in the stomach it releases a gastric juice, it contains pepsin. Pepsin is a hydrochloric acid that is thick and slippery mucus. Whithout the mucus protecting the stomach the pepsin would break down the complex protien into simpler protien. The muscle contraction with the gastro juices push the food to the stomachs exit. 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. 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.