Imagine your leg is like a folding chair. Your knee is the part that lets it fold and unfold. When you bend, it’s like pushing down on one side of the chair, your bones move because of special cushions called cartilage inside your knee.
Examples
- Your knee bends when you sit down on a chair
- Bending your knee helps you jump higher
- Walking up stairs makes your knees bend and straighten repeatedly
Ask a question
See also
- What Causes Hiccups?
- What Causes the Color of Leaves?
- Why Do We Blink?
- How Can a Single Seed Grow into a Tree?
- How Do Birds Migrate So Far?
Discussion
Recent activity
Categories: Biology · joints,anatomy,movement