The Heart
⭐ MasteredYour heart is a muscle that pumps blood around your body. Blood carries oxygen and nutrients to every part of you.
Your heart beats about 100,000 times every day.
All about The Heart
Your heart is a muscle about the size of your fist. It pumps blood through a network of blood vessels called arteries, veins and capillaries. Each beat pushes blood to your lungs to collect oxygen and then to the rest of your body.
The heart has four chambers, two on the top and two on the bottom. Valves inside keep blood flowing in one direction. Your heart rate goes up when you run and down when you rest or sleep.
🎮 Try it yourself!
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Real-life uses of The Heart
- Checking your pulse to see how fast your heart is beating
- Getting more active to make your heart stronger
- Helping doctors understand heart health with an electrocardiogram (ECG) test
Frequently asked questions about The Heart
How fast does a child's heart beat?
Children usually have a resting heart rate of about 70 to 120 beats per minute, and it speeds up when they are active.
Why does my heart beat faster when I run?
Your muscles need more oxygen when you run, so your heart pumps faster to deliver it.
Can you feel your heartbeat?
Yes. Place two fingers on the side of your neck or wrist to feel your pulse.