Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Digestive System Exploring Health Sciences 8th Grade Mrs. Sergent, RN, CNOR, RNFA * About the Presentation Mouth & Teeth Esophagus Stomach Small Intestines Liver & Pancreas Large Intestines Colon Rectum & Anus Review of Digestive System Videos Authors slide Resources Quit * Click to hear what digestion sounds like in your mouth! The mouth is where digestion first begins. Food starts in your mouth and you begin digestion by chewing with your teeth. Food mixes with your salvia to make a soft ball of food. Next the ball of food moves into the esophagus. Quit * Food moves through your esophagus which is a tube that is about 25 cm long. It takes 4 to 10 seconds for your food to move through the esophagus. Your smooth muscles then move the food down toward the stomach. Quit * The stomach is a muscular bag that can grow and shrink. Chemicals are mixed in with the food in your stomach in order to break it down. Food digests in your stomach for 2 to 4 hours until it becomes a liquid called “chyme” Quit * Your small intestines is 4 to 7 meters in length. Most digestion takes place in the small intestines. Different chemicals are released into the small intestines to break down fats, carbohydrates, and proteins. The absorption of nutrients into your body also takes place in the small intestines. Quit * The liver gives off a greenish fluid called bile which breaks up the fat in the food you eat. Fats are broken down in the small intestines. Your pancreas gives off chemicals that make a digestive solution which helps break down food in the small intestines. It also gives off insulin which lets sugar go into your blood stream Pancreas Liver Quit Your large intestine’s main job is to absorb water from the mass of food that has not been digested. This keeps water inside your body so that you do not dehydrate. Quit Your colon is part of your large intestines. The colon forms waste material that is going to be sent out of your body. * Quit The rectum and anus are part of your large intestines. They release your waste material from the body. Quit * School House Rock Time Quit References Ortleb, Edward, and Dinah Zike. Human Body Systems. New York: McGraw Hill Companies Inc., 2008. School House Rock. (2012, May 12). Digestion-Body Machine [Video file]. Retrieved from https://www.youtube.com/watch?v=jh 2-g3ftCaE West, J. (2013). Grand Valley State University [PowerPoint slides]. Quit