Nature Example
❤️
Your Body's Electric Drummer
Credit: Wikimedia Commons. Click here for the license
Your heart knows when to beat because of a tiny, built-in electrical switch.
Nature's Example:
Your heart has a special group of cells called the 'pacemaker'. It acts like a tiny drummer. Every second, it sends out a small, regular 'zap' of electricity to the heart muscle, making it squeeze (beat!) in perfect time.
💡 Fun Facts
- When you run, your brain sends a signal to this 'pacemaker' to 'zap' faster, making your heart beat faster.
- Doctors can read this electric 'zap' using a machine called an ECG.
- If someone's natural pacemaker is broken, a doctor can give them a tiny, battery-powered one (like our 'cell') to do the job for it!