The Digestive System
The digestive system is a collection of internal organs that helps your body decide where the food you’ve eaten should go. The main parts are the mouth, the oesophagus, the stomach and the intestines. The food goes into the mouth and through the digestive system over, and over again every time you eat.
All the parts of the digestive system work together to keep you healthy. The digestive system starts with the mouth. In the mouth there are teeth, which help break down the food, saliva, which helps wet the food and the tongue, which pushes the food down your throat. Once the food has been in the mouth the food goes down the oesophagus. The oesophagus uses a motion called peristalsis to squeeze the food down into your stomach.
In the stomach, the food gets churned around for 4 hours! The stomach and the liver produce special enzymes that help the food mix and churn around. The stomach looks a bit like a bag. The liver holds all the nutrients that the body might need later. It can hold more than 200 nutrients. The liver is maroon in colour.
The food goes from the stomach, through the duodenum and into the small intestine. The small intestine uses that same peristalsis motion as the oesophagus to squeeze the food down the 6-7 metre long tube. Once the food has finished going through the small intestine, it goes into the large intestine. THe large intestine is like a big snake wrapped around it’s prey. Then the food goes into the rectum and through to the anus where it gets pooped out as faeces
The digestive system is a very important part of the human body. You cannot live with out the digestive system.
Glossary: Internal-something on the inside of another thing.
Oesophagus-a long tube that the food goes down.
Intestines-long pipes at the end of the system.
Peristalsis-a squeezing motion.
Produce-something that is made in the body.
Enzymes-something inside acid.
Maroon-a browny red colour
Duodenum-a small pipe from the stomach to the intestines.