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Explains how the mouth, tongue, esophagus, stomach, liver/gallbladder, pancreas, small intestine, and large intestine work together to break food into absorbable nutrients and manage water and waste. Includes background reading prompts, vocabulary practice, and an eight-step worksheet/diagram or acting task aligned with grade-level standards.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/a-journey-through-the-digestive-system-student-math-and-science-activity/411957/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/a-journey-through-the-digestive-system-student-math-and-science-activity/411957.png","ImageObject",300,407,{"name":92,"@type":93},"SANS","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-29","2026-09-28",true,{"@type":102,"interactionType":103,"userInteractionCount":44},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the main function of the digestive system described in the background?","Question",{"text":112,"@type":113},"It breaks down food into molecules small enough for the body to absorb. 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The nutrients are absorbed in the body and used for energy. Our digestive system goes through eight basic steps.  \n1. Mouth/Teeth—First steps in the digestive system take place in the mouth as the teeth cut, tear, and grind the food down into small enough pieces so that it can fit down the throat. Saliva is squirted into the food to moisten and soften the food. The mouth makes close to 500 milliliters (1/2 quart) of saliva each day. Saliva contains chemicals called enzymes, which breakdown the starches in the food. The enzyme in saliva that breaks down starch into sugar is called amylase.  \n2. Tongue—A muscle that works with the food and saliva to form a “ball”that can be swallowed. Of course, the tongue also contains taste buds that help us tell the difference between salty, sour, sweet and bitter foods.  \n3. Esophagus—The esophagus is simply a transportation tube from the mouth to the stomach. When we swallow, what we are really doing is closing a trap door in our throat called the epiglottis. This sends food down the esophagus and prevents food from going down the trachea (or windpipe) and into our lungs. Food moves down the esophagus by a process called peristalsis. Peristalsis uses layers of muscle in your esophagus and intestines. These muscles relax and contract in a wave motion to pass food forward.  \n4. Stomach—The first stop after the esophagus is the stomach. Once the food gets to the stomach, the stomach uses chemicals to try to make the food particles tinier. These chemicals are called gastric juices, and they include hydrochloric acid and enzymes (chemicals that break down food) . The food is moved around in the stomach and mixed with the chemicals for 3-4 hours. When the stomach is finished with it, the food is a creamlike liquid called chyme. This substance is still not small enough to get into our blood stream, and it has not yet provided the body with anything useful. Now a valve at the end of the stomach opens, sending the food past the liver.  \n5. Liver/Gallbladder—At this point, our food is hit with more chemicals. The liver makes a chemical called bile, and it is stored in the gallbladder. When the gallbladder mixes bile with our food, it does an important job: breaking down the fat (from milk, butter, cheeses) into tiny droplets. This fat will supply us with much energy later.  \n[www.agclassroom.org/ok](www.agclassroom.org/ok)  \nOklahoma Academic Standards  \nGRADE 3  \nSpeaking and Listening: R.1,2,3; W.1,2. Reading and Writing Process: R.3 . Critical Reading and Writing: W.2 .  \nVocabulary: R.1,3,5 Number & Operations: 2.3,5 . Measurement: 2.3,4 Health—1.11 PE— 5.34; 6.2  \nGRADE 4  \nSpeaking and Listening: R.1,2,3; W.1,2. Reading and Writing Process: R.3 . Critical Reading and Writing: W.2 . Vocabulary: R.1,3,5 Number & Operations: 1.5. Algebraic Reasoning: 2.2. Measurement: 2.4,5 Life Science: 1-1 Health— 1.11  \nGRADE 5  \nSpeaking and Listening: R.1,2,3; W.1,2. Reading and Writing Process: R.3 . Critical Reading and Writing: W.2 . Vocabulary: R.1,3,5 Physical Science: 1-4. Life Science: 2-1 Number & Operations: 1.4.  \nMeasurement: 3.2,3,4 Health—1 . 8; 3.10 PE—4 . 1; 5.5; 6.3; 7. 1,3  \nMaterials  \nlong string and a yardstick unsalted or regular crackers dictionaries chalk or marker  \n6. Pancreas—The pancreas also adds a digestive chemical as the food leaves the stomach. This digestive juice works on breaking down the carbohydrates (from breads, potatoes, pasta, etc.) and the proteins (from meats, eggs, peanut butter, etc.)  \n7. Small intestine—The small intestine is the real hero of the digestive system. The small intestine is a tube that is about 18 feet long! This is where the real digestion takes place. As the food passes thro","cbCaip70KE1Fpv4C","https://ap.wps.com/l/cbCaip70KE1Fpv4C","pdf",363428,"English","# Objective\n# Background\n# Eight Steps of the Digestive System\n## Mouth/Teeth\n## Tongue\n## Esophagus\n## Stomach\n## Liver/Gallbladder\n## Pancreas\n## Small Intestine\n## Large Intestine\n# Classroom Activities and Materials\n## English Language Arts\n## Science","[{\"question\":\"What is the main function of the digestive system described in the background?\",\"answer\":\"It breaks down food into molecules small enough for the body to absorb. The absorbed nutrients are then used for energy.\"},{\"question\":\"How does food move through the esophagus?\",\"answer\":\"Food travels down the esophagus using peristalsis, where layered muscles relax and contract in wave motion to move food forward.\"},{\"question\":\"What role do villi in the small intestine play?\",\"answer\":\"Villi have capillaries that can absorb tiny food molecules and send them through the blood to the rest of the body.\"}]","A Journey Through the Digestive System - Student Math and Science Activity | PDF",1790590087]