Video narration
What happens to a bite of food after you swallow it? Your teeth chew the bite into smaller pieces. Then it travels down your food pipe, the tube that carries food, into your stomach. There, your stomach squeezes and mixes the bite, breaking it down more. Its muscles squeeze the bite again and again. But the bite is not just moving. It is being broken into tiny useful parts your body can use. Those useful parts are called nutrients. Next, the bite moves into your small intestine, a long, twisty tube. There, nutrients pass through its wall into your blood, while bits your body cannot use keep moving. They reach your large intestine, which takes in water from what remains. So what happens to your bite? Its useful nutrients enter your blood; the leftovers leave your body as poop.