Mon Prof Augmenté
Heart and Two Loops
Age 12 · Biology
The heart pushes blood through two sets of tubes. One set carries oxygen-rich blood to body cells, and the other carries carbon-dioxide-rich blood to the lungs.
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In the picture
- The heart: a muscular pump that pushes blood into the tubes
- A red tube leading to body cells: carries oxygen-rich blood to them
- Body cells: take in oxygen and release carbon dioxide
- A blue tube leading to the lungs: carries carbon-dioxide-rich blood to the lungs
- The lungs: add oxygen to the blood and remove carbon dioxide
Examples
- After running, your muscles need more oxygen, so your heart beats faster.
- Breathing faster helps your lungs take in oxygen and remove carbon dioxide.
Key takeaways
- The heart pumps blood in two loops: one to the body and one to the lungs.
- Blood picks up oxygen in the lungs and drops off oxygen at body cells.
Quiz: Heart and Two Loops (Age 12)
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According to the card, what does the heart do with blood?
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What happens to blood when it reaches the lungs?
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What do body cells do with the blood that reaches them?
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