❤️
How Your Heart Pumps Blood
Right now, deep inside your chest, a busy little muscle is squeezing
over and over to keep you alive. Let's find out how it works!
Quick fact: Your heart never takes a break — not even when you sleep.
It beats about 100,000 times every day! 💪
Tap Next → to start exploring.
Where is your heart?
Your heart sits in the middle of your chest, leaning a little to the
left. It is about the same size as your own clenched fist.
Make a fist and hold it to your chest — that's roughly how big your heart is!
Size of a fist 👊
Made of muscle 💪
Tilts left ⬅️
Four rooms inside
Your heart has 4 rooms called chambers. Tap each glowing room
to learn what it does!
👆 Tap a room above to reveal its job…
Rooms explored: 0 / 4
Blue rooms hold blood that needs oxygen. Red rooms hold
fresh blood full of oxygen, ready to zoom around your body. 🩸
How the pump works: lub-DUB
A heartbeat is a squeeze. The muscle tightens to push blood out, then
relaxes to fill up again. Press the button to watch one beat, step by step.
Ready to beat ❤️
Doctors hear this squeeze as a “lub-dub” sound through a stethoscope.
Blood travels in a loop
Blood goes round and round in a loop, like cars on a racetrack. 🏎️
Put the journey in the right order — tap the steps from first to last.
🫁 Picks up oxygen in the lungs
❤️ Heart squeezes it out
🦵 Delivers oxygen to the body
↩️ Tired blood returns to the heart
Tap along with a heartbeat
Every squeeze sends a little push through your body — that's your
pulse. Tap the heart in time, like a steady drum. Try to reach
10 taps! 🥁
When you run or jump, your body needs more oxygen, so your heart beats
faster to keep up. That's why your chest goes thump-thump after sports! 🏃
Why does blood matter?
Blood is like a delivery truck. 🚚 It carries oxygen and
food to every tiny part of your body, and takes away the rubbish your
cells don't need.
🫁Lungs add fresh oxygen to your blood.
❤️Your heart pumps the blood everywhere.
🩸Blood vessels are the roads blood travels on.
💪Every muscle gets the energy it needs to move.
Take care of your heart: play and exercise, drink water, sleep well,
and eat fruit and veggies. A happy heart keeps you strong! 🌟
🎉
Great work, heart explorer!
Here's everything you discovered today:
👊Your heart is a muscle about the size of your fist.
🏠It has 4 rooms (chambers) that fill and empty.
❤️It squeezes (lub-dub) to push blood out.
🔁Blood travels in a loop: lungs → heart → body → back.
🩸Blood delivers oxygen so your whole body can work.
Now put your hand on your chest and say thank you to your amazing heart! ❤️