Your Amazing Food Journey
Every time you eat a sandwich, apple, or pizza, your body goes to work breaking it down. This process is called digestion, and it happens in your digestive system. Your digestive system is like a long, twisting tube that runs from your mouth all the way to your bottom. It takes about 24 to 30 hours for food to travel through the whole system.
Think of it like a recycling factory: just as a factory breaks down old materials into useful parts, your digestive system breaks down food into tiny pieces your body can actually use.
Step One: Chewing in Your Mouth
Digestion starts the moment you take a bite. Your teeth chew the food into smaller pieces, making it easier to swallow. At the same time, saliva (spit) is released from glands in your mouth. Saliva contains special chemicals called enzymes that start breaking down the food chemically. This is why chewing thoroughly helps your digestive system work better.
Step Two: The Stomach's Churning Action
Once you swallow, food slides down a tube called the oesophagus into your stomach. Your stomach is like a mixing bowl that churns and squeezes the food for 2 to 4 hours. Your stomach produces acid and more enzymes that break down the food even further. The mixture becomes a soupy liquid called chyme.
Think of it like a washing machine: your stomach tumbles food around with chemicals, breaking it down into smaller and smaller pieces.
Step Three: The Small Intestine's Big Job
The real magic happens in your small intestine, which is surprisingly long—about 6 metres coiled up inside you! Here, more enzymes break down the food completely. The walls of the small intestine absorb the useful nutrients—like proteins, carbohydrates, fats, and vitamins—into your bloodstream so your body can use them for energy and growth.
Step Four: The Large Intestine and Beyond
Anything your body couldn't use passes into the large intestine. This absorbs water and leftover minerals, then stores the waste as poo until you go to the toilet. The whole journey is a brilliant teamwork between your teeth, saliva, stomach acid, and intestines—all working together to fuel your body!