Amazingly, just the smell of good grub can make your mouth start to water!įast fact: Your salivary glands can produce up to six cups of saliva per day. It’s also full of chemicals called enzymes that help to break down food. Here, you’ll also find the salivary glands that produce most of the slimy liquid in your mouth. This saliva moistens food, making it easier to swallow. Gulp!įast fact: When you swallow, a little flap of cartilage called the epiglottis closes off the windpipe so food doesn’t go down there by mistake. It also squeezes the chewed grub into swallowable lumps, pushing them back towards the throat. Meanwhile, the tongue keeps moving the food around, shifting it to the type of teeth that will be best at munching it. It all starts here! Up to 28 strong teeth* chomp your food, breaking it into smaller bits. Let’s follow your food to learn about the brilliant bits of our bodies that make up the human digestive system… Then, the smelly leftovers, along with billions of dead bacteria, are ready to exit the body. On its trip, it’s mixed with acids and digestive juices, and squeezed and squelched until all the nutrients that the body needs are absorbed. It takes around 24 hours for your dinner to wind its way through the nine-metre-long digestive tract. Follow Nat Geo Kids as we take a journey down through the human digestive system to find out where our grub goes!

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