The digestive system project


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  • Hello, may i ask a question? What do you call that project? Is that a collage? because I'm planning to use this also as a project of my students. Thank you in advance
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The digestive system project

  1. 1. Sarah Kim THE DIGESTIVE SYSTEM Mouth Esophagus Mentos :) Liver Gall bladder Stomach Pancreas Feces (poop) Large Intestine Small Intestine Anus, Rectum = Accessory Organs: it is when the food DOESNʼT travel in these organs; Tongue, Teeth, Salivary Gland, Liver, Gall Bladder, Pancreas = Digestive Tract: it is when the food travels to these organs; Mouth, Esophagus, Stomach, Small Intestine, Large Intestine, Rectum, Anus
  2. 2. Sarah Kim The MOUTH and ESOPHAGUS Mouth: When you chew your food with your teeth, it mixes with your tongue and your saliva. The saliva makes your food soft to sends it through the esophagus. Esophagus: The esophagus is a muscular tube that takes the food to move down the esophagus to the stomach. The smooth muscles in the wall of the esophagus move food downwards with a squeezing action, and this action is called peristalsis. The waves of muscle contractions move food through the entire digestive tract.
  3. 3. Sarah Kim The STOMACH, LIVER, GALL-BLADDER and PANCREAS Pancreas: The pancreas makes insulin which is a hormone that allows the glucose to pass from the bloodstream to your cells. Liver: The liver help you by producing bile to digest food. Bile breaks down grease. Gall Bladder: It is where they store bile until it is needed. Stomach: In the stomach, food is mixed by peristalsis. Food is also mixed with very strong hydrochloric acid to break it down. The acid also destroys bacteria and produces mucus that makes the food slippery and protects the stomach. Food moves through your stomach until it changes to a thin, watery liquid called chyme. Chyme moves out of your stomach to your small intestine.
  4. 4. Sarah Kim The LARGE INTESTINE and SMALL INTESTINE Absorbing nutrients Small Intestine: When chyme leaves your stomach, it enters the small intestine first called the duodenum. In the small intestine, bile is added. It is to break up large and fat particles to float at the top of the liquid. (same way as breaking the grease). The wall of the small intestine is covered with villi. Villi increases the surface area so Poop : Feces(its actually that nutrients in the chyme have MORE places to be absorbed in mentos. I just colored it brown) the small intestine. Finally, the blood transport all the nutrients to all your cells of your body. Peristalsis soon makes all the undigested and unabsorbed food go into the large intestine. Large Intestine: The main job of the large intestine is absorbing water from the undigested food. When the water is all absorbed, the undigested food becomes more solid.
  5. 5. Sarah Kim The ANUS and RECTUM Rectum: The rectum is where the urine is stored for indigestible and waste! Anus: It is an opening end of the rectum. It is also where the feces comes out.
  6. 6. Sarah Kim How does the motar and pestle work like your teeth? The motar and pestle act like your molar teeth. This is done so because both pestle and molar teeth have flat surfaces to grind the food easily. The flat surfaces are efficient in breaking the food into smaller pieces because it creates larger area to grind the food. However there is a difference that when humans grind food in our mouth using the teeth, we can not chew the food for long periods of time. THANK YOU :)