The heart pumps blood by squeezing and relaxing, like a muscle making a fist and then opening it!
Here's how it works in more detail:
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The Heart is a Strong Muscle: Imagine your heart as a super-strong muscle that works all day and night.
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Squeezing and Relaxing: This muscle doesn't just sit there; it squeezes (contracts) to push blood out and then relaxes to fill up with more blood. This squeezing and relaxing is called your heartbeat.
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A Regular Rhythm: The heart does this squeezing and relaxing in a regular pattern, keeping the blood flowing nicely. It beats around 70 times per minute on average, but this can change depending on if you're running around or resting.
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Like a Water Pump: Think of your heart like a pump that sends water through pipes. Instead of water, your heart pumps blood! And instead of pipes, your blood travels through blood vessels.
So, in short, your heart pumps blood by constantly squeezing and relaxing, creating a regular heartbeat that keeps blood flowing throughout your body.
