THE HUMAN DIGESTIVE SYSTEMCreated by Olivia and SavannahThe human digestive system is a series of organs andglands that process food.
The Digestive Tract and its Structures The process starts in the mouth where food is broken down by chewing. After being swallowed, the food enters the esophagus. That is a long tube that goes from the mouth to the stomach. The esophagus uses wave like muscle movements to force food from the mouth to the stomach. The stomach is like a mixer, mashing all the food into smaller pieces. It does this with strong muscles and gastric acids in the walls of the stomach. After leaving the stomach food enters the small intestine. It breaks down the food mixture and your body absorbs all the vitamins, minerals, proteins, carbohydrat es, and fats.
CONTINUING THE DIGESTIVE TRACT The pancreas, liver and gallblader help you digest your food. Those organs send different juices to the first part of your small intestine called the duodenum. Those juices help digest the food and allow it to be absorbed. The pancreas makes juices that help the body digest fats and proteins. Juice from the liver called bile helps to absorb fats into the blood stream. The place where bile is stored until the body needs it is called the gallblader. Then the food goes through the final parts of the small intestine. Your food can spend as long as 4 hours in the small intestine and it will become a very thin watery mixture. The it will go into your large intestine.
Continuing the Digestive Tract While that is going on your nutrients rich blood is coming to the liver to be processed. The liver filters out harmful substances or wastes turning some into more bile. Your liver also helps figure out how much nutrients will go to the rest of the body and how much will stay in storage. Now getting back to the large intestine. It has a tiny tube with a closed end coming off of it, called the appendix, that is part of the digestive track. After most nutrients is removed from the food mixture, the waste is left. That is the stuff your body can’t use and needs to be passed out of the body. It passes the part of the intestine called the colon.
CONTINUING THE DIGESTIVE TRACT The colon is where the body gets one last chance to absorb the water and some minerals into the blood. As the water leaves, the waste becomes harder. As it keeps moving along it becomes a solid, also know as poop. The large intestine pushes the poop into the rectum, the last stop of the digestive track. The poop stays there until you are ready to go to the bathroom. When you go to the bathroom the poop goes out through the anus.
INTERACTIONS WITH OTHER SYSTEMS The digestive system interacts with the integumentary system. The vitamin D activated in the skin play a big role in absorption of calcium in the digestive tract. The muscular system defiantly plays a big part in the digestive system. Muscles are important in chewing, swallowing, and moving of digestion products in the gastrointestinal tract. It also interacts with the circulatory system. This is because the bloodstream carries absorbed nutrients to all body cells.