Video: How the Digestive System Works


Food is important for all of us on this planet. Humans, plants, and animals-Everyone need food for nutrition and growth as well as protection against diseases. But have you ever thought about how our body gets the nutrients from the food we eat every day? How does a loaf of bread give you the energy for carrying on with different activities in your daily life?

We have an amazing tool in our body that helps us accomplish this wonder every time we have food. Do you know what it is? It is our digestive system, friends! Let us learn more about the working of our digestive system in detail with Chloe and Nurb by taking a look at their journey through the digestive system.

It all starts with the mouth

In the first phase of their journey, Chloe and Nurb enter into the gateway to our digestive system, i.e., our mouths. Yes, you may not have thought about the importance of our mouth in the working of the digestive system! But the ‘How the Digestive System works video’ show that the mouth is the place where the food eaten by us is broken down into pieces by chewing. Do you know why your mouth waters when delicious food is on the table? Our saliva is important in breaking down the food for further digestion. The enzymes in our saliva help in softening the food and breaking down the starch content in our food.

Processing food in the belly

Once the chewing is done in the mouth, we accompany Chloe and Nurb in the ‘How the Digestive System works video’ towards the stomach through the oesophagus. The oesophagus is a narrow tube connecting our mouth to the stomach. The stomach welcomes chewed food by relaxing the upper muscles and secretes gastric juices which help in disintegrating the food into smaller particles. The stomach contains acidic juices which can dissolve the food eaten by us, and the hard proteins are broken down easily in this stage. This may appear gross, but you must have seen and felt these acidic juices and pulpy mass of food when vomiting.

One small to deal with it all

In the next stage, our digestive system contains small intestine.  As the food leaves the stomach, it reaches the small intestine. In the duodenum of the small intestine, bile produced by the liver as well as enzymes from the pancreas help in digesting the food and absorbing the nutrients from food.

This journey through the small intestine takes a lot of time as the small intestine is accountable for almost 90% of the digestion and absorption process. You would be amazed to know that actually, our food has to spend 4 hours in the small intestine before moving towards the large intestine! Interesting, isn’t it?

The larger one

Now you must be wondering that, if there is a small intestine then why is a large intestine needed? The large intestine is crucial just like other parts in our digestive system, and we cannot underestimate the contribution of any player in the team, right? The large intestine is the place where our body obtains the water and salt from the healthy foods through absorption.

Reaching the end

Finally, the body rejects the parts of our food that are not absorbed by the body as waste or in simple words, ‘poop’! This job is assigned to the rectum in our digestive system which stores the waste and holds it with the help of sphincter muscles. Once the rectum gets the signal for doing away with the ‘poop,’ the sphincter relaxes, and stool is expelled through the anus that is the exit point of our digestive system.

That’s it, friends! We could now be able to understand how our digestive works. With a little bit of curiosity, it could be possible to learn more about the working of our digestive system.