Summary
An Operation Ouch science clip. The doctors open up the heart to show its chambers and valves and explain how it keeps blood flowing the right way. Free on the official Operation Ouch YouTube channel.
Viewer safety
Ages 9+
Real medical footage with a little blood and a few injuries -- preview before showing.
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Teaching resources
Discussion questions
Discussion
Inside that fist-sized muscle are rooms and one-way doors that keep your blood on track.
- What are the spaces inside the heart called?
- What do the valves in the heart do?
- Why must blood flow in only one direction?
Quick work-a-long
Vocabulary: heart, chamber, valve, blood, flow.
Try it: Draw a simple heart with arrows showing blood flowing in and out.