Digestive/Excretory System

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  • Oh Hello, I'm Sys Tems. I was just getting ready to do some grocery shopping for dinner tonight. Did you know that every time you eat food, a lot is happening in your body? It all starts in your mouth.
  • Inside your mouth, Your teeth break down your food with mechanical digestion so you can digest it. Your incisors cut/ break food so your molars can grind and crush up your food.
  • In The Mouth:
  • Incisor
  • When do I get a turn?
  • Molar
  • After your food has been ground up by your teeth it is then deposited to your stomach through a small tube called the esophagus. In your stomach your food is mixed with enzymes and hydrochloric acid. After the food has left the stomach, it is considered chyme.
  • Esophagus
  • Chewed up blueberry
  • Stomach
  • As food is traveling to your small intestine, your liver makes a digestive juice called bile. Bile is stored in the gallbladder until it is sent to the small intestine. Another digestive organ called your pancreas also makes another kind of juice that is also sent to the small intestine. These digestive juices help the small intestine dissolve food.
  • Small Intestine
  • Liver
  • Gall Bladder
  • Pancreas
  • In your small intestine finger-like structures called villi absorb the nutrients from chyme as it passes through. From the small intestine chyme then travels to the large intestine.
  • Small Intestine
  • Large Intestine
  • Chyme
  • When food enters the large intestine it is thin and watery. The large intestine sucks most of the water out of digested chyme. This process is called absorption. This is what keeps your body from becoming dehydrated. When most of the water is gone, chyme travels to the rectum. The rectum holds some of this solid waste until it piles up and then you are ready to use the bathroom.
  • Large Intestine
  • Exit (Rectum)
  • In No Miles
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