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Digestive System
| Question | Answer |
|---|---|
| What is the digestive system? | A group of organs that work together to break down food into energy and nutrients your body needs to grow and stay healthy. |
| Where does digestion begin? | In your mouth, when you chew food and saliva mixes with it. |
| What do your teeth do in digestion? | They break food into smaller pieces, making it easier to swallow. |
| What is saliva and what does it do? | Saliva is spit that mixes with food and begins breaking it down chemically. |
| What is the esophagus? | A tube that connects your mouth to your stomach and pushes food downward using muscle contractions. |
| What is peristalsis? | The wave-like movement of muscles in the esophagus that pushes food downward automatically. |
| What happens in the stomach? | The stomach stores and mixes food using strong acids and juices for 1 to 3 hours, creating a soupy mixture called chyme. |
| What is chyme? | A soupy mixture of food and stomach juices that moves from the stomach into the small intestine. |
| How long is the small intestine? | About 20 feet long. |
| What are villi? | Tiny finger-like structures in the small intestine that absorb nutrients from food into your bloodstream. |
| What is the main job of the small intestine? | To absorb nutrients from food into your bloodstream so your body can use them for energy, growth, and repair. |
| What does the pancreas do? | It makes digestive juices that help break down food in the small intestine. |
| What does the liver do? | It makes bile, a liquid that helps digest fats. |
| What does the gallbladder do? | It stores bile and releases it when needed to help digest fats. |
| What is the large intestine also called? | The colon. |
| What is the main job of the large intestine? | To absorb water from waste and absorb some remaining nutrients and minerals. |
| How is the large intestine different from the small intestine? | The large intestine is shorter and wider than the small intestine. |
| What is the rectum? | The part of the digestive system where solid waste (poop) collects before leaving the body. |
| How long does the entire digestive journey take? | About 24 to 72 hours from the time you eat food until it leaves your body. |
| How long does food stay in your stomach? | 1 to 3 hours of mixing. |
| How long does food stay in your small intestine? | 3 to 5 hours of nutrient absorption. |
| How long does food stay in your large intestine? | 24 to 72 hours of water absorption. |
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